https://padlet.com/3076152/sbb5wz3m0vo70fj0 A Start to Keeping Orbital Mechanics Straight en-us 2020-09-28 13:26:07 UTC 2020-10-02 12:06:39 UTC hello@padlet.com https://padlet.net/icons/png/1f3f3.png 3076152 https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/784305908 As low as possible as long as it can stay in orbit
Period of about 90 minutes
All manned space missions except lunar missions

Missions/Purposes:
Lunar Iss
GPS 
weather
imagery]]> 2020-09-28 13:28:06 UTC https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/784305908 3076152 https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/784307140 Regioni above LEO, but below geosynchronous
lower than 35000
higher than 2000
Most common is 20,200

Period of about 12 hours and no more than 23.5 hours, 18 times per day roughly

Mission/Purpose:
navigation
communication
geo/space

Famous Names
Glonass
Galileo
Telstar 1]]> 2020-09-28 13:28:27 UTC https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/784307140 3076152 https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791599812 Longer than 24 hours
Earth is rotating faster than the satellite orbit period so ground trace appears to go westward]]> 2020-09-30 14:57:49 UTC https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791599812 3076152 https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791605195 over 35,786]]> 2020-09-30 14:58:54 UTC https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791605195 3076152 https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791608200 stays in one spot with respect the Earth
36,000 km
0 degree inclination
Geostationary belt - belt around Earth
Limited resources]]> 2020-09-30 14:59:34 UTC https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791608200 3076152 https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791614928 Exactly 24 hours
ground trace inclination up to +/-70 degrees]]> 2020-09-30 15:01:01 UTC https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791614928 3076152 https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791640128 communication
permanent relay stations]]> 2020-09-30 15:06:26 UTC https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791640128 3076152 https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791660692 High inclination
Highly elliptical - large semi-major axis, high eccentricity]]> 2020-09-30 15:10:50 UTC https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791660692 3076152 https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791669146 Large Apogee - slow here
Perigee - fast af boiiii]]> 2020-09-30 15:12:36 UTC https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791669146 3076152 https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791672407 Apogee is over Russia for a long period of time
Communication for long hang time over Russia
Not good for imagery - too far away or too fast]]> 2020-09-30 15:13:19 UTC https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791672407 3076152 https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791693499 Weather
Earth surface changes
Agriculture]]> 2020-09-30 15:17:54 UTC https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791693499 3076152 https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791695334 Varies from LEO to HEO
Must have 90 degree inclination
ground-trace will eventually cover all of Earth
Passes over the same part of Earth at the same time each day]]> 2020-09-30 15:18:17 UTC https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791695334 3076152 https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791724904 Groups that performs a mission together
Do not have to be in the same orbit type]]> 2020-09-30 15:24:29 UTC https://padlet.com/3076152/sbb5wz3m0vo70fj0/wish/791724904