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During this period the moon will wax from a slender crescent phase to nearly half illuminated. This will be a great time to view meteor activity as the moon will have set by the time the more active morning hours arrive. The moon will be present during the evening hours but successful meteor observing is still possible during this time by simply keeping the moon out of your field of view. The estimated total hourly meteor rates for evening observers this week is near 4 as seen from mid-northern latitudes (45N) and 3 as seen from tropical southern locations (25S). For morning observers the estimated total hourly rates should be near 32 as seen from mid-northern latitudes and 24 from the southern tropics. The actual rates will also depend on factors such as personal light and motion perception, local weather conditions, alertness and experience in watching meteor activity. Note that the hourly rates listed below are estimates as viewed from dark sky sites away from urban light sources. Observers viewing from urban areas will see less activity as only the brighter meteors will be visible from such locations.

The radiant (the area of the sky where meteors appear to shoot from) positions and rates listed below are exact for Saturday night/Sunday morning December 8/9. These positions do not change greatly day to day so the listed coordinates may be used during this entire period. Most star atlases (available at science stores and planetariums) will provide maps with grid lines of the celestial coordinates so that you may find out exactly where these positions are located in the sky. A planisphere or computer planetarium program is also useful in showing the sky at any time of night on any date of the year. Activity from each radiant is best seen when it is positioned highest in the sky, either due north or south along the meridian, depending on your latitude. It must be remembered that meteor activity is rarely seen at the radiant position. Rather they shoot outwards from the radiant so it is best to center your field of view so that the radiant lies near the edge and not the center. Viewing there will allow you to easily trace the path of each meteor back to the radiant (if it is a shower member) or in another direction if it is a sporadic. Meteor activity is not seen from radiants that are located far below the horizon. The positions below are listed in a west to east manner in order of right ascension (celestial longitude). The positions listed first are located further west therefore are accessible earlier in the night while those listed further down the list rise later in the night.

These sources of meteoric activity are expected to be active this week.

The December phi Cassiopeiids (DPC) are the classical return of the Andromedids and the radiant that was active prior to the breakup of comet 3D/Biela in the 1840's. This source is active from November 28 through December 10th. Maximum activity was expected to occur on December 6th when the Earth passes closest to particles released by 3D/Biela in 1649. The expected radiant is located at 01:36 (024) +50 on the night of maximum activity. This area of the sky is located just northwest of the 4th magnitude star known as Nembus (51 Andromedae). This position is also very close to the border with Cassiopeia and in some years the radiant lies in Cassiopeia, hence the name of phi Cassiopeiids. These meteors are best seen near 2100 (9pm) Local Standard Time (LST). Meteors from the December Phi Cassiopeiids strike the atmosphere at 17km/sec., which would produce meteors of very slow velocity. Expected rates would be low away from maximum. There have been no reports of visual activity so far. Rates could be strong but the meteors may be faint and difficult to see. Therefore those viewing from urban areas may see nothing at all. At only 17 km/sec. the December phi Cassiopeiids would also produce extremely slow meteors.

The Northern Taurids (NTA) are active from a large radiant located at 05:48 (087) +30. This area of the sky is located in southern Auriga, 4 degrees northeast of the 2nd magnitude star known as El Nath (beta Tauri). This position is close to the Southern Taurids so great care must be taken in separating these meteors. You must have the two radiants near the center of your field of view to properly differentiate these sources. Current rates would be 2 per hour as seen from the northern hemisphere and 1 per hour as seen from south of the equator. These meteors may be seen all night long but the radiant is best placed near midnight local standard time (LST) when it lies on the meridian and is located highest in the sky. With an entry velocity of 28 km/sec., the average Northern Taurid meteor would be of slow velocity.

The Southern Taurids (STA) are active from a large radiant centered near 05:58 (089) +24. This position lies in western Gemini, close to the position occupied by the 4th magnitude star known as 1 Geminorum. These meteors may be seen all night long but the radiant is best placed near midnight LST when it lies on the meridian and is located highest in the sky. Current rates would be 1 per hour as seen from the northern hemisphere and less than 1 per hour as seen from south of the equator. With an entry velocity of 27 km/sec., the average Southern Taurid meteor would be of slow velocity.

The Monocerotids (MON) are active from November 28th through December 27th with the peak activity occurring on December 13th. The radiant is currently located at 06:36 (099) +08. This position lies in northern Monoceros, 7 degrees east of the 1st magnitude orange star known as Betelgeuse (Alpha Orionis). This position is only 7 degrees south of the radiant of the November Orionids so care must be take to distinguish between the two. Current rates should be near 1 per hour no matter your location. Rates at maximum may reach 2 per hour. The Monocerotids are best seen near 0100 LST when the radiant lies highest above the horizon. At 41 km/sec. the Monocerotids produce mostly meteors of medium velocity.

The November Orionids (NOO) are active from a radiant located at 06:46 (102) +15. This area of the sky lies in southern Gemini, 2 degrees east of the 2nd magnitude star known as Alhena (gamma Geminorum). This area of the sky is best placed in the sky near 0100 LST, when it lies highest above the horizon. This stream is active from November 7 through December 17, with maximum activity occurring on November 29. Rates should be near 2 per hour no matter your location. With an entry velocity of 43 km/sec., most activity from this radiant would be of medium speed.

The Geminids (GEM) are active from December 1-22, with peak activity occurring on December 14th. This weekend the radiant is located near 07:14 (109) +33. This position lies in northern Gemini, 3 degrees northwest of the 2nd magnitude star known as Castor (alpha Geminorum). Rates this weekend should be near 10 per hour as sen from the northern hemisphere and 5-7 in the southern hemisphere . Hourly rates will increase dramatically as the week progresses. At 34 km/sec. the Geminids produce mostly meteors of medium velocity.

The Puppid-Velids (PUP) are a vast complex of weak radiants located in the constellations of Puppis and Vela. Visual plots and photographic studies have revealed many radiants in this area during November and December. The combined strength of these radiants can produce a ZHR of 10. Actual hourly rates will be much less unless you happen to be observing from the deep Southern Hemisphere. Activity from this source begins around December 1st. The center of this activity is currently located at 08:16 (124) -45. This position lies on the Puppis/Vela border, 2 degrees north of the 2nd magnitude star known as gamma Velorum. Peak rates occurred near December 7. These meteors are best seen near 0300 LST when the radiant lies highest above the horizon in a dark sky. Observers located in the Southern Hemisphere have an advantage viewing this shower as the radiant will rise higher into their sky allowing more activity to be seen. Since the radiant lies low in the south for most northern hemisphere observers, meteors seen from north of the equator tend to be long in length and long-lasting. At 40 km/sec. the Puppid-Velids produce meteors of average velocity.

The Sigma Hydrids (HYD) are active from November 24 through December 21, with maximum activity occurring on December 6. The radiant is currently located at 08:24 (126) +02 , which places it in extreme western Hydra, 3 degrees southwest of the 4th magnitude star known as sigma Hydrae. These meteors are best seen near 0400 LST when the radiant lies highest above the horizon. Hourly rates are expected to be near 3 per hour no matter your location. With an entry velocity of 62 km/sec., most activity from this radiant would be of swift speed.

The December Leonis Minorids (DLM) are a shower of long duration active from December 6th through January 18th. Maximum occurs near December 21st when rates may reach 3 an hour. During this period I would expect an hourly rates near 1 from a radiant located at 09:57 (149) +35. This position lies in western Leo Minor, 2 degrees southwest of the faint star known as 21 Leo Minoris. These meteors are best seen near 0400 LST when the radiant lies highest above the horizon. At 63 km/sec. the December Leonis Minorids produce mostly swift meteors.

The last of the Psi Ursa Majorids (PSU) are expected this weekend. This shower is active from December 2-10 with maximum activity occurring on December 5th. The radiant is currently located at 11:31 (173) +41. This position lies in central Ursa Major, 4 degrees southeast of the third magnitude star known as Psi Ursae Majoris. This area of the sky is best placed during the last hour before dawn, when it lies highest above the horizon in a dark sky. Current rates would most likely be less than one per hour and may reach 1 per hour at maximum. Observers south of the equator would see rates less than 1 per hour due to the lower radiant elevation. At 62km/sec., the average Psi Ursa Majorid meteor would be swift.

The December Sigma Virginids (DSV) was discovered by John Greaves using the data of SonotaCo. IMO video cameras confirmed that this source is active during the month of December. Peak rates occur near December 14th. The current radiant location is at 13:05 (196) +08 which places it in northern Virgo, 3 degrees south of the 3rd magnitude star known as Vindemiatrix (epsilon Virginis). Current hourly rates should be near 1 shower member no matter you location. These meteors are best seen during the last dark hour before dawn, when the radiant lies highest above the horizon in a dark sky. At 68 km/sec. the December Sigma Virginids would produce mostly swift meteors.

The December Alpha Draconids (DAD) were discovered by the Japanese observers using data from SonotaCo and is active from November 30-December 15. They are predicted to peak on December 8th from a radiant located at 13:34 (204) +58. This position actually lies in northeastern Ursa Major, 3 degrees northeast of the second magnitude star known as Mizar (zeta Ursae Majoris). These meteors are best seen during the last dark hour before dawn, when the radiant lies highest above the horizon in a dark sky. This shower is not well seen from the southern hemisphere. Current rates would most likely be near 1 per hour as seen from the northern hemisphere. Observers south of the equator would see rates less than 1 per hour due to the lower radiant elevation. Some meteor experts feel these meteors are part of the Quadrantid shower, which peaks in early January.

As seen from the mid-northern hemisphere (45N) one would expect to see approximately 11 sporadic meteors per hour during the last hour before dawn as seen from rural observing sites. Evening rates would be near 3 per hour. As seen from the tropical southern latitudes (25S), morning rates would be near 9 per hour as seen from rural observing sites and 2 per hour during the evening hours. Locations between these two extremes would see activity between the listed figures.

The list below offers the information from above in tabular form. Rates and positions are exact for Saturday night/Sunday morning except where noted in the shower descriptions.

Tags: December Alpha Draconids December Leonis Minorids December Meteor Activity December Meteor Showers December Phi Cassiopeiids December Sigma Virginids Geminids Meteors Monocerotids Northern Taurids November Orionids Psi Ursa Majorids Sigma Hydrids Southern Taurids

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Meteor Activity Outlook for December 8-14, 2018

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During this period the moon will wax from a slender crescent phase to nearly half illuminated. This will be a great time to view meteor activity as the moon will have set by the time the more active morning hours arrive.

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During this period the moon will reach its new phase on Friday December 7th. At this time the moon will be located near the sun and will be invisible at night. This weekend the waning crescent moon will rise during the early morning hours but successful meteor observing is still possible by simply keeping the moon out of your field of view. The estimated total hourly meteor rates for evening observers this week is near 4 as seen from mid-northern latitudes (45N) and 3 as seen from tropical southern locations (25S). For morning observers the estimated total hourly rates should be near 25 as seen from mid-northern latitudes and 20 from the southern tropics. The actual rates will also depend on factors such as personal light and motion perception, local weather conditions, alertness and experience in watching meteor activity. Morning rates are slightly reduced during this period due to moonlight. Note that the hourly rates listed below are estimates as viewed from dark sky sites away from urban light sources. Observers viewing from urban areas will see less activity as only the brighter meteors will be visible from such locations.

The radiant (the area of the sky where meteors appear to shoot from) positions and rates listed below are exact for Saturday night/Sunday morning December 1/2. These positions do not change greatly day to day so the listed coordinates may be used during this entire period. Most star atlases (available at science stores and planetariums) will provide maps with grid lines of the celestial coordinates so that you may find out exactly where these positions are located in the sky. A planisphere or computer planetarium program is also useful in showing the sky at any time of night on any date of the year. Activity from each radiant is best seen when it is positioned highest in the sky, either due north or south along the meridian, depending on your latitude. It must be remembered that meteor activity is rarely seen at the radiant position. Rather they shoot outwards from the radiant so it is best to center your field of view so that the radiant lies near the edge and not the center. Viewing there will allow you to easily trace the path of each meteor back to the radiant (if it is a shower member) or in another direction if it is a sporadic. Meteor activity is not seen from radiants that are located far below the horizon. The positions below are listed in a west to east manner in order of right ascension (celestial longitude). The positions listed first are located further west therefore are accessible earlier in the night while those listed further down the list rise later in the night.

These sources of meteoric activity are expected to be active this week.

The December Phoenicids (PHO) are a periodic shower that rarely produces noticeable activity. The only impressive display produced so far by this shower occurred in 1956 when ZHR's were near 100. These meteors at active from December 4-6 with a peak on December 5th. The radiant at maximum is located at 01:02 (016) -45. This position lies in central Phoenix, just north of the 3rd magnitude star known as beta Phoenicis. For those viewing from the northern tropics southward, this position also lies 10 degrees northwest of the bright 1st magnitude star known as Achernar (alpha Eridani). This area of the sky is best placed as soon as evening twilight ends. These meteors are best seen from the southern hemisphere where the radiant lies much higher in the sky. For those viewing from the northern hemisphere, only those in the northern tropics have any real chance of seeing activity from this source. At only 12 km/sec. the Phoenicids produce extremely slow meteors.

The December phi Cassiopeiids (DPC) are the classical return of the Andromedids and the radiant that was active prior to the breakup of comet 3D/Biela in the 1840's. This source is active from November 28 through December 10th. Maximum activity is expected to occur on December 6th when the Earth passes closest to particles released by 3D/Biela in 1649. The expected radiant is located at 01:36 (024) +50 on the night of maximum activity. This area of the sky is located just northwest of the 4th magnitude star known as Nembus (51 Andromedae). This position is also very close to the border with Cassiopeia and in some years the radiant lies in Cassiopeia, hence the name of phi Cassiopeiids. These meteors are best seen near 2100 (9pm) Local Standard Time (LST). Meteors from the December Phi Cassiopeiids strike the atmosphere at 17km/sec., which would produce meteors of very slow velocity. Expected rates would be low away from maximum. No one exactly what to expect at maximum. Rates could be strong but the meteors may be faint and difficult to see. Therefore those viewing from urban areas may see nothing at all. At only 17 km/sec. the December phi Cassiopeiids would also produce extremely slow meteors.

The Northern Taurids (NTA) are active from a large radiant located at 05:19 (080) +29. This area of the sky is located on the Taurus/Auriga border, 2 degrees west of the 2nd magnitude star known as El Nath (beta Tauri). This position is close to the Southern Taurids so great care must be taken in separating these meteors. You must have the two radiants near the center of your field of view to properly differentiate these sources. Current rates would be 2 per hour as seen from the northern hemisphere and 1 per hour as seen from south of the equator. These meteors may be seen all night long but the radiant is best placed near midnight local standard time (LST) when it lies on the meridian and is located highest in the sky. With an entry velocity of 28 km/sec., the average Northern Taurid meteor would be of slow velocity.

The Southern Taurids (STA) are active from a large radiant centered near 05:26 (082) +22. This position lies in eastern Taurus, 2 degrees west of the 3rd magnitude star known as Tianguan (zeta Tauri). These meteors may be seen all night long but the radiant is best placed near midnight LST when it lies on the meridian and is located highest in the sky. Rates at this time should be near 1 per hour regardless of your location. With an entry velocity of 27 km/sec., the average Southern Taurid meteor would be of slow velocity.

The Monocerotids (MON) are active from November 28th through December 27th with the peak activity occurring on December 13th. The radiant is currently located at 06:09 (092) +09. This position lies in northeastern Orion, 3 degrees northeast of the 1st magnitude orange star known as Betelgeuse (Alpha Orionis). This position is only 7 degrees south of the radiant of the November Orionids so care must be take to distinguish between the two. Current rates should be less than 1 per hour no matter your location. Rates at maximum may reach 2 per hour. The Monocerotids are best seen near 0100 LST when the radiant lies highest above the horizon. At 41 km/sec. the Monocerotids produce mostly meteors of medium velocity.

The November Orionids (NOO) are active from a radiant located at 06:18 (094) +16. This area of the sky lies in northeastern Orion, 4 degrees west of the 2nd magnitude star known as Alhena (gamma Geminorum). This area of the sky is best placed in the sky near 0100 LST, when it lies highest above the horizon. This stream is active from November 7 through December 17, with maximum activity occurring on November 29. Rates should be near 3 per hour no matter your location. With an entry velocity of 43 km/sec., most activity from this radiant would be of medium speed.

The Geminids (GEM) are active from December 1-22, with peak activity occurring on December 14th. This weekend the radiant is located near 06:47 (102) +34. This position lies in northern Gemini, near the spot occupied by the 4th magnitude star known as Theta Geminorum. Rates this weekend should be less than 1 no matter your location. Hourly rates should increase to near 5 by the end of this period. At 34 km/sec. the Geminids produce mostly meteors of medium velocity.

The Puppid-Velids (PUP) are a vast complex of weak radiants located in the constellations of Puppis and Vela. Visual plots and photographic studies have revealed many radiants in this area during November and December. The combined strength of these radiants can produce a ZHR of 10. Actual hourly rates will be much less unless you happen to be observing from the deep Southern Hemisphere. Activity from this source begins around December 1st. The center of this activity is currently located at 08:00 (120) -45. This position lies on the Puppis/Vela border, 4 degrees northwest of the 2nd magnitude star known as gamma Velorum. Peak rates occur near December 7. These meteors are best seen near 0300 LST when the radiant lies highest above the horizon in a dark sky. Observers located in the Southern Hemisphere have an advantage viewing this shower as the radiant will rise higher into their sky allowing more activity to be seen. Since the radiant lies low in the south for most northern hemisphere observers, meteors seen from north of the equator tend to be long in length and long-lasting. At 40 km/sec. the Puppid-Velids produce meteors of average velocity.

The Sigma Hydrids (HYD) are active from November 24 through December 21, with maximum activity occurring on December 6. The radiant is currently located at 08:07 (121) +04 , which places it in extreme eastern Canis Minor, 5 degrees east of the brilliant zero magnitude star known as Procyon (alpha Canis Minoris). These meteors are best seen near 0400 LST when the radiant lies highest above the horizon. This source is the strongest in the sky for the first week of December. Hourly rates are expected to be near 4 per hour no matter your location. With an entry velocity of 62 km/sec., most activity from this radiant would be of swift speed.

The Psi Ursa Majorids (PSU) were discovered by observers in Japan using data from SonotaCo. This shower is active from December 2-10 with maximum activity occurring on December 5th. At maximum the radiant is located at 11:16 (169) +42. This position lies in central Ursa Major, 3 degrees southeast of the third magnitude star known as Psi Ursae Majoris. This area of the sky is best placed during the last hour before dawn, when it lies highest above the horizon in a dark sky. Current rates would most likely be less than one per hour and may reach 1 per hour at maximum. Observers south of the equator would see rates less than 1 per hour due to the lower radiant elevation. At 62km/sec., the average Psi Ursa Majorid meteor would be swift.

The December Kappa Draconids (DKD) are another shower discovered in Japan by observers using data from SonotaCo. This short-lived shower is only active from December 2-7 with maximum activity occurring on December 4th. On the night of maximum the radiant will be located at 12:29 (187) +70. This position lies in extreme western Draco, close to the faint star Kappa Draconis. While the radiant lies above the horizon all night for most of the northern hemisphere, it is best placed during the last hour before dawn, when it lies highest above the horizon in a dark sky. Rates could reach 2 per hour on the morning of the 3rd. Away from that morning I would expect hourly rates of less than 1. Due to the high northerly declination of the radiant these meteors are not visible from most of the southern hemisphere. At 41km/sec., the average December Kappa Draconid meteor would be of medium velocity.

The December Sigma Virginids (DSV) was discovered by John Greaves using the data of SonotaCo. IMO video cameras confirmed that this source is active during the month of December. Peak rates occur near December 14th. The current radiant location is at 12:40 (190) +10 which places it in northern Virgo close to the position occupied by the faint star known as Rho Virginis. Current hourly rates would be less than 1 shower member no matter you location. These meteors are best seen during the last dark hour before dawn, when the radiant lies highest above the horizon in a dark sky. At 68 km/sec. the December Sigma Virginids would produce mostly swift meteors.

The December Alpha Draconids (DAD) were discovered by the Japanese observers using data from SonotaCo and is active from November 30-December 15. They are predicted to peak on December 8th from a radiant located at 13:38 (205) +58. This position actually lies in northeastern Ursa Major, 4 degrees northeast of the second magnitude star known as Mizar (zeta Ursae Majoris). These meteors are best seen during the last dark hour before dawn, when the radiant lies highest above the horizon in a dark sky. This shower is not well seen from the southern hemisphere. Current rates would most likely be near 1 per hour as seen from the northern hemisphere. Observers south of the equator would see rates less than 1 per hour due to the lower radiant elevation.

As seen from the mid-northern hemisphere (45N) one would expect to see approximately 10 sporadic meteors per hour during the last hour before dawn as seen from rural observing sites. Evening rates would be near 3 per hour. As seen from the tropical southern latitudes (25S), morning rates would be near 7 per hour as seen from rural observing sites and 2 per hour during the evening hours. Locations between these two extremes would see activity between the listed figures. Morning rates are slightly reduced by moonlight during this period.

The list below offers the information from above in tabular form. Rates and positions are exact for Saturday night/Sunday morning except where noted in the shower descriptions.

Tags: Dec. Sigma Virginids December Alpha Draconids December Kappa Draconids December Meteor Activity December Meteor Showers December Phi Cassiopeiids December Phoenicids Geminids Meteors Monocerotids Northern Taurids November Orionids Psi Ursa Majorids Puppid-Velids Sigma Hydrids Southern Taurids

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Meteor Activity Outlook for December 1-7, 2018

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During this period the moon will reach its new phase on Friday December 7th. At this time the moon will be located near the sun and will be invisible at night. This weekend the waning crescent moon will rise during the early morning hours but successful meteor observing is still possible by simply keeping the moon out of your field of view.

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The Watchers - Daily news service | Watchers.NEWS

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Newly discovered asteroid 2018 WG2 flew past Earth at 0.52 LD

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A small asteroid designated 2018 WG2 flew past Earth at a distance of 0.52 LD / 0.00134 AU (200 461 km / 124 560 miles) on November 30, 2018. Asteroid 2018 WG2 belongs to the Apollo group of asteroids. It was first observed at Mt. Lemmon Survey, Ariz...

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The Watchers - Daily news service | Watchers.NEWS

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Their all-sky cameras registered the objects at 01:51 UTC, 03:33 and 05:41 UTC over the provinces of Valladolid, Granada, Jaén and Albacete.

They were generated by three rocks from three different comets that hit Earth's atmosphere at a speed of 150 000 and 200 000 km/h.

The fireballs were recorded in the framework of the SMART project (University of Huelva) from the meteor-observing stations located at La Hita (Toledo), Calar Alto (Almeria), La Sagra (Granada), Sierra Nevada (Granada) and Sevilla.
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Featured image and video courtesy: SMART, Meteoroides.net

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Three bright meteors recorded over Spain

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Their all-sky cameras registered the objects at 01:51 UTC, 03:33 and 05:41 UTC over the provinces of Valladolid, Granada, Jaén and Albacete. They were generated by three rocks from three different comets that hit Earth's atmosphere at a speed of 150 000 and 200 000 km/h.

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The Watchers - Daily news service | Watchers.NEWS

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Asteroid 2018 WA3 flew past Earth at 0.84 LD

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Asteroid 2018 WA3, with an estimated diameter between 7.3 and 16 m (24 - 52 feet), flew past Earth at a distance of 0.84 LD / 0.00215 AU (323 131 km / 200 784 miles) on November 28, 2018. This object belongs to the Apollo group of asteroids. It was ...

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The Watchers - Daily news service | Watchers.NEWS

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An impressive meteor fireball lit up the night sky over Mexico's capital Mexico City at 05:15 CST (11:15 UTC) on December 8, 2018. The event lasted for more than 10 seconds.
According to Rodolfo Cobos Arriaga, president of Acapulco Astronomical Association, the meteor could have been traveling at about 20 000 km/h (12 500 mph).

While the exact dimensions are tough to determine, Arriaga speculates it could have had a diameter of 500 m (1 640 feet).

It is very likely that small parts of it survived the atmospheric entry.

The event was captured by Jorge Diaz Henry in New Mexico:

Featured image: Bright fireball over Mexico City on December 8, 2018. Credit: Jorge Diaz Henry
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Long-lasting green fireball lights up night sky over Mexico City

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An impressive meteor fireball lit up the night sky over Mexico's capital Mexico City at 05:15 CST (11:15 UTC) on December 8, 2018. The event lasted for more than 10 seconds. According to Rodolfo Cobos Arriaga, president of Acapulco Astronomical A...

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The Watchers - Daily news service | Watchers.NEWS

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A bright fireball was seen and recorded streaking through the night sky over southern Texas around 19:59 CST on December 10, 2018 (01:59 UTC, December 11). The event lasted 7 seconds before the object disappeared in a bright flash.
The American Meteor Society received 49 reports by 19:00 UTC today, most of them from San Antonio and Austin, TX.

Texas fireball trajectory and heatmap - December 11, 2018. Credit: AMS

Image credit: A. Hutton, AMS

Featured image credit: K. Palivec, AMS
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Bright fireball over San Antonio and Austin, Texas

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A bright fireball was seen and recorded streaking through the night sky over southern Texas around 19:59 CST on December 10, 2018 (01:59 UTC, December 11). The event lasted 7 seconds before the object disappeared in a bright flash. The American Meteo...

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Bright meteor event over Granada on Dec.10//Bola de fuego sobre Granada el 10 dic.

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Three bright meteor events on Dec. 4-5 // Tres meteoros brillantes en la noche del 4-5 de diciembre

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Bright and slow meteor on Dec. 2 // Bola de fuego brillante y lenta del 2 de diciembre

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¡Otra! Impresionante bola de fuego sobre Ciudad de México (video) -- Sott.net

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Meteoro sobre la Ciudad de México, 8 de diciembre, 2018.

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Gran bola de fuego sobre Acapulco, México (video) -- Sott.net

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Gran bola de fuego sobre los cielos de Acapulco, México, diciembre 8, 2018

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Gran bola de fuego sobre Acapulco, México (video) -- Sott.net

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Gran bola de fuego sobre los cielos de Acapulco, México, diciembre 8, 2018

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Traducido por el equipo de SOTT.net en español

La causa de una enorme explosión que sacudió las casas de Coventry sigue siendo un misterio.

Se trata de jefes de defensa que negaron que el incidente fuera causado por aviones de combate que volaban a velocidad supersónica.

El incidente del domingo por la noche desencadenó una importante operación en la que la policía y los bomberos buscaron la fuente de la "explosión" que parecía estar centrada en Longford.

Era tan ruidoso que se escuchaba desde lugares tan lejanos como Willenhall, Walsgrave y Bedworth, y hacía que las ventanas se estremecieran y el yeso cayera de los techos.

Se temía que una subestación de gas en Grindle Road, cerca del Ricoh Arena, hubiera explotado, pero esto quedó descartado.

Tampoco hubo grandes accidentes en la zona esa noche y el Servicio Geológico Británico dijo que no se habían registrado terremotos en ese momento.

Eso dejó la teoría de que el ruido fue causado por un " estampido sónico " de los aviones de combate rompiendo la barrera del sonido.

CoventryLive preguntó al Ministerio de Defensa: "¿Puede confirmar si algún avión sobrevoló Coventry y Warwickshire en ese momento a velocidad supersónica?

"Si es así, ¿podrías decirme por qué? ¿Fue un ejercicio o estaban volando para interceptar una amenaza percibida?"

Pero el portavoz del Ministerio de Defensa dijo: "Lo hemos comprobado con la RAF y no había aviones rápidos sobre Coventry en ese momento."

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Fuerte explosión hace temblar las ventanas y causa que el yeso caiga de los techos en Coventry, Reino Unido -- Sott.net

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Traducido por el equipo de SOTT.net en español La causa de una enorme explosión que sacudió las casas de Coventry sigue siendo un misterio. Se trata de jefes de defensa que negaron que el incidente fuera causado por aviones de combate que volaban...

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Traducido por el equipo de SOTT.net en español

Los astrónomos fueron testigos de los impresionantes escombros meteorológicos que se dispararon en Hungría, Eslovenia, Austria, Italia, Suiza, Croacia, Eslovaquia y Alemania.

La bola de fuego que atraviesa el cielo húngaro el jueves por la mañana se conoce científicamente como bólido, un fragmento de meteorito que estalla en llamas especialmente brillantes una vez que entra en la atmósfera.

Las imágenes recogidas en varias webcams situadas en las laderas del condado de Veszprém capturaron el momento en que el asombroso meteorito pasó por la Tierra.

Aunque el fenómeno duró sólo unos segundos, las cámaras pudieron grabar el momento en que el cielo se tornó azul brillante al aparecer la bola de fuego.

El bólido también fue visto en Viena, donde las cámaras filmaron un rayo azul cobalto que atravesó el cielo de la madrugada alrededor de las 4 de la mañana en hora de Greenwich (GMT).

El suceso se produjo después de que la NASA advirtiera que un asteroide seis veces más largo que un autobús de dos pisos de Londres pasaría por la Tierra el viernes por la tarde.

El asteroide, apodado por la NASA Asteroid 2018 VE4, hará su aparición más cercana a la Tierra alrededor de las 17.24 horas GMT (UTC).

El vuelo del viernes marcará la quinta visita del asteroide al rincón del espacio de la Tierra después de su primera visita el 18 de septiembre de 1947.

El asteroide podría no ser un asesino de planetas de ninguna manera, pero incluso el extremo inferior de la estimación de la NASA deletrea peligro potencial para áreas densamente pobladas.

En 2013, más de 1.000 personas fueron alcanzadas por un meteoro de 65 pies de ancho que estalló sobre la ciudad de Chelyabinsk en Rusia.

La poderosa explosión del meteoro hizo añicos las ventanas de la ciudad, golpeando los rostros de los espectadores con pedazos de vidrio.

Según la Dra. Matija Cuk, de la Universidad de Cornell en Nueva York, los impactos con estos asteroides más pequeños son raros y no hay casos conocidos de que sean letales.

El experto espacial dijo: "En cuanto a los meteoritos más pequeños que chocan contra el suelo, son de muy baja peligrosidad y nunca se ha informado de que un meteorito pequeño haya matado a ningún ser humano.

"Escuché la historia de que un perro fue asesinado por un meteorito que cayó en 1911 en Nakhla, Egipto, y también hubo casos de daños materiales. Aún así, el tráfico, la contaminación e incluso los relámpagos son mucho más peligrosos que los meteoritos pequeños."

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Bola de fuego azul brillante atraviesa el cielo en Hungría - Visto por los astrónomos en OCHO países más -- Sott.net

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Traducido por el equipo de SOTT.net en español Los astrónomos fueron testigos de los impresionantes escombros meteorológicos que se dispararon en Hungría, Eslovenia, Austria, Italia, Suiza, Croacia, Eslovaquia y Alemania. La bola de fuego que atraviesa el cielo húngaro el jueves por la mañana se conoce científicamente como bólido, un fragmento de meteorito que estalla en llamas especialmente brillantes una vez que entra en la atmósfera.

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En la madrugada del 4 al 5 de diciembre, tres brillantes bolas de fuego sobrevolaron las provincias de Valladolid, Granada, Jaén y Albacete. Se produjeron el entrar en la atmósfera terrestre tres rocas procedentes de tres cometas distintos a velocidades comprendidas entre los 150 mil y los 200 mil km/h.

El primer evento tuvo lugar a las 23:51 hora local sobre la provincia de Valladolid. Esta bola de fuego se inició a una altitud de unos 106 km sobre el sur de dicha provincia y se extinguió a una altitud de unos 76 km. La segunda se registró a las 2:33 hora local, iniciándose a unos 111 kilómetros sobre el noreste de la provincia de Granada para terminar a unos 62 km de altura sobre el sur de la provincia de Jaén. Y la tercera apareció a las 4:41 hora local, iniciándose a unos 113 km sobre el noreste de la provincia de Jaén y terminando a una altitud de unos 77 km sobre la provincia de Albacete.

Los eventos han sido registrados por los dectectores del proyecto SMART (Universidad de Huelva) que operan en los observatorios astronómicos de La Hita (Toledo), Calar Alto (Almería), Sierra Nevada (Granada), La Sagra (Granada) y Sevilla.

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Tres meteoros brillantes sobrevuelan España en la noche del 4-5 de diciembre, en un periodo de 5 horas -- Sott.net

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En la madrugada del 4 al 5 de diciembre, tres brillantes bolas de fuego sobrevolaron las provincias de Valladolid, Granada, Jaén y Albacete. Se produjeron el entrar en la atmósfera terrestre tres rocas procedentes de tres cometas distintos a velocidades comprendidas entre los 150 mil y los 200 mil km/h.

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Esta bola de fuego cruzó lentamente los cielos de Castilla-La Mancha el 2 de diciembre a las 4:46 hora local (que equivalen a las 3:46 en tiempo universal). El evento se produjo como consecuencia de la brusca entrada en la atmósfera terrestre de un fragmento procedente de un asteroide a una velocidad de unos 50 mil km/h.

La bola de fuego se inició a una altura de unos 81 km sobre el noroeste de la provincia de Cuenca. Finalizó a una altitud de unos 36 km sobre el noreste de dicha provincia, justo en el límite provincial con Teruel. El fenómeno ha sido registrado por los detectores que operan en el marco del Proyecto SMART (Universidad de Huelva) desde los observatorios astronómicos de La Hita (Toledo), La Sagra (Granada) y Sevilla.

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Bola de fuego brillante y lenta filmada sobre España este 2 de diciembre -- Sott.net

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Esta bola de fuego cruzó lentamente los cielos de Castilla-La Mancha el 2 de diciembre a las 4:46 hora local (que equivalen a las 3:46 en tiempo universal). El evento se produjo como consecuencia de la brusca entrada en la atmósfera terrestre de...

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Es posible que un meteorito haya caído cerca de la Reserva Wind River el fin de semana pasado. Alrededor de las 5:30 am del 1 de diciembre, varios residentes de Riverton vieron una racha de bola de fuego en el cielo y luego escucharon un fuerte ruido de ventanas dos o tres minutos más tarde.

Un testigo informó sus observaciones a la American Meteor Society , describiendo un objeto blanco brillante en el horizonte, descendiendo de derecha a izquierda a las 5:33 am, seguido del sonido de "grandes truenos" alrededor de las 5:36 am. El condado 10 documentó una serie de este tipo de avistamientos de ciudadanos sorprendidos en las redes sociales. También se informaron avistamientos similares en las ciudades de Ethete y Ft. Washakie, y el "boom" se escuchó a 80 millas al norte en Dubois, según Buckrail.

No es la primera vez que se ve un meteorito sospechoso en el área. En 2015, varios testigos reportaron una bola de fuego "verde" que sobrevolaba Riverton. El astrónomo de Cody Dewey Vanderhoff también documentó un meteoro más tarde ese año.

El artículo de Buckrail especula que el último avistamiento también pudo haber sido un meteoro y descartó la posibilidad de un terremoto o un estampido supersónico. Algunos lugareños han citado otras explicaciones en las redes sociales que van desde extraterrestres hasta Papá Noel. Si, de hecho, la bola de fuego fuera un meteoro cayendo a la Tierra, los restos de la roca podrían estar en algún lugar del remoto oeste de Wyoming.

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Meteorito puede haber caído en Wyoming la semana pasada -- Sott.net

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Es posible que un meteorito haya caído cerca de la Reserva Wind River el fin de semana pasado. Alrededor de las 5:30 am del 1 de diciembre, varios residentes de Riverton vieron una racha de bola de fuego en el cielo y luego escucharon un fuerte...