Linked Questions

9 votes
2 answers
845 views

How do stable equilibrium points work in GEO? If all geosynchronous spacecraft suddenly lost stationkeeping, would most "fall into" one or the other?

The (currently unanswered) question Quantitatively, how deep are the stable equilibrium points in GEO? How much delta-v to move from one to the other? (also see comments at Delta-v to move from GEO to ...
uhoh's user avatar
  • 149k
10 votes
1 answer
708 views

Why do the geosynchronous TDRS satellites have this distribution of inclinations?

From the Tracking and Data Relay Satellite System (TDRSS) option on Celestrak's NORAD Two-Line Element Sets Current Data TLE page I've compiled current TLE ...
uhoh's user avatar
  • 149k
5 votes
2 answers
263 views

Are there any satellites in geosynchronous orbits that are neither geostationary nor 'wobbly geostastionary' (figure of eight geostationary)?

None of the examples in this question: Are there any satellites in geosynchronous but not geostationary orbits? are nothing like geostationary. They still stay above the one side of the earth. What ...
Matthew Christopher Bartsh's user avatar
4 votes
1 answer
389 views

Is TDRS-M (TDRS-13) where it's supposed to be?

edit: Status 2018-Jan-01 inclination still about 7 degrees, location still not listed in Wikipedia. This question got me thinking about the location of active TDRS satellites, and the newest addition ...
uhoh's user avatar
  • 149k
3 votes
2 answers
242 views

Is a polar geosynchronous orbit described by Viviani's curve?

This answer to Is there a name for the great circle where latitude and longitude are equal? says (in part): More generally, a clélie is the name given to any spherical curve where the longitude $\...
uhoh's user avatar
  • 149k
5 votes
0 answers
504 views

Where can I find data on satellite orbits?

I'm an enthusiast who'd like access to satellite orbital data to simulate / plot trajectories of manmade satellites (of any kind) on my home computer. Where's the best place for me to find this kind ...
Visipi's user avatar
  • 51
3 votes
1 answer
132 views

The Earth's rotation does change by small amounts; what is done to keep geostationary satellites aligned with ground stations? [duplicate]

Are satellites moved to keep them aligned? Are they at risk of becoming unusable from the small, but measurable changes to Earth's rotation?
Ken Fabian's user avatar
  • 1,042
2 votes
1 answer
238 views

What would be the most viable way to have constant communication with a Mars base?

I am currently working on a project involving designing a Mars base, and a major factor is establishing constant communication between Earth and the Mars ground base. I am thinking of utilizing laser ...
Leo Bukalski's user avatar
3 votes
1 answer
125 views

Why would a mission choose a geosynchronous orbit over a geostationary orbit?

I was going to ask "Are there any missions where a geosynchronous orbit is advantageous over a geostationary orbit?" The TL;DR answer to this question (Are there any satellites in geosynchronous but ...
CJ Dennis's user avatar
  • 653
4 votes
1 answer
152 views

Why does TDRS 1's inclination evolve so much differently than that of all the others starting in 1995?

The plot below is from the question Why do the geosynchronous TDRS satellites have this distribution of inclinations?, and the explanation says Inclination and mean motion (rev/day) for TDRS ...
uhoh's user avatar
  • 149k