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Questions tagged [geosynchronous]

Questions regarding the type of orbit in which the orbiting object stays in roughly the same location over Earth's surface.

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What is the largest number of individual spacecraft bound for GEO that have been launched together?

Now that transfer to GEO is often done using electric propulsion, the same launch vehicle can be loaded with more (than one) communications satellites bound for GEO, because it only needs to place ...
uhoh's user avatar
  • 153k
-3votes
1answer
147views

Building a space elevator from space down [closed]

I've put a lot of thought into this. I think the approach of building a space elevator from ground up is not realistic. I believe from space a line could be lowered from a geosynchronous orbit. I ...
user66211's user avatar
5votes
1answer
115views

Could the 2029 approach of 99942 Apophis perturb the orbits of GSO satellites?

Thinking about this question, I remembered that on the 13th of April 2029, the asteroid 99422 Apophis will pass within geostationary orbit distance - Apophis will be around 31,600 kilometres at ...
Dave Gremlin's user avatar
6votes
1answer
188views

What is the payload premium from an equatorial launch, (as compared with Cape Canaveral) to Geostationary Orbit?

SeaLaunch went to significant expense and effort to launch from sea surface on the equator. According to Sea Launch; Advantages of equatorial ocean-platform based launches The need for a "plane ...
Woody's user avatar
9votes
2answers
888views

Shadow Imaging of satellites can produce sub-meter resolution images while satellites are in GSO. How would this information be used?

At 36,000km altitude, GSO satellites are beyond the distance at which their structure can be resolved by conventional ground based photography. However, it is theoretically possible to obtain high ...
Woody's user avatar
2votes
0answers
149views

NASA GMAT sample script providing deltaV above analytical result when aiming to GEO Height

I am using the GMAT example script available at \samples\Ex_GEOTransfer.script (R2022a) to compute de deltaV from LEO to GEO including change plane maneuver. The problem is that the script seems to be ...
patowski1981's user avatar
10votes
1answer
2kviews

What is Earth's apparent magnitude from geosynchronous orbit?

How bright is a "full Earth" from geosynchronous altitude (22,200 mi) and would it be dangerous to look at a full Earth for too long from that distance without wearing a dimmed visor?
Hannes's user avatar
4votes
1answer
406views

Geo satellite - antenna gain contours to heat map in STK

I am using STK to show antenna gain contours on the ground from a transmitter on a sensor on a geo bird that is tracking a receiver on the ground. With good resolution I can create great images that ...
rebee's user avatar
2votes
0answers
624views

Maximum and minimum surface temperatures of a satellite in GEO?

Just as the title, how could one find out, or simply estimate the maximum and minimum likely surface temperatures of a satellite orbiting in GEO.
parry's user avatar
4votes
3answers
1kviews

A black cube 1 mile per side appears in geosynchronous orbit around the earth. Who would spot it and how would they do it? How easy would it be?

This is not intended to be a math question, so much as an understanding of how the current technology and techniques would view this problem.
john's user avatar
0votes
0answers
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What is the distance between Mars and the lagrange point L2 Mars Sun? [duplicate]

I am writing a science fiction novel that is more soft that hard sci fi but I would like to know at least an estimat of the distances between L2 Mars Sun and Mars. I know that asking for an exact ...
z1995's user avatar
2votes
1answer
173views

What was the first spacecraft intentionally moved from GEO to the graveyard orbit to die? (just a bit above geosynchronous)

Why “super” for supersynchronous orbits? Why not “trans”? and discussions and answers there got me wondering: Question: What was the first spacecraft intentionally moved from GEO or geosynchronous to ...
uhoh's user avatar
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2votes
1answer
64views

What was the first spacecraft intentionally placed in a supersynchrous Earth orbit? (period longer than a sidereal day)

Why “super” for supersynchronous orbits? Why not “trans”? and discussions and answers there got me wondering: Question: What was the first spacecraft intentionally placed in a supersynchronous Earth ...
uhoh's user avatar
  • 153k
11votes
2answers
2kviews

What are the benefits of supersynchronous transfer orbits?

Some satellites are injected into higher apogee than standard GTO apogee of 35 786 km. Next the satellite then has to increase its perigee ( usually 250 km ) to GEO altitude. Then the apogee has to be ...
Ashvin's user avatar
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6votes
2answers
347views

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

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