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Questions tagged [retrograde-orbit]

An orbit with an equatorial inclination between 90° and 180°, that is, an orbit in the opposite direction of the rotation of the body being orbited.

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How much does the tidal effect affect satellites in a retrograde orbit?

How much more unstable are satellites in retrograde then a pro-grade orbit? Does the stability of a retrograde orbit increase with altitude? This answer said this orbit is unstable and made me think,...
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How would propagation differ between a GEO and a Retrograde GEO?

A Binary Equatorial Synchronous Retrograde Orbit is an orbit that would travel in the opposite direction of GEO and would pass over the same point on Earth twice per day at the same altitude of GEO. ...
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Does a retrograde launch impact the return booster propellant requirements, as compared to prograde?

Space-X's latest launch, of SAOCOM-1A, was a retrograde launch from Vandenberg, with a landing back at Landing Zone 4 - at Vandenberg. A retrograde launch requires more energy (to counteract the ...
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Is It Easier To Hohmann Transfer to a Retrograde Satellite or to a Prograde Satellite?

Suppose I start on Earth and make a Hohmann transfer to Neptune. After traveling along my initial trajectory, I arrive at the Neptunian system. However, the objects in the Neptune system are going ...
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Should a Europa clipper use a retrograde orbit?

A "clipper", as I understand it, is orbiting a planet to repeatedly flyby one of its moons. Mariner 10 orbited the Sun to fly by Mercury 3 times. Should clippers in general use retrograde orbits in ...
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What's the floor for stable retrograde lunar orbits?

I've been playing with lunar retrograde orbits in an orbital simulator. The retrograde lunar orbits with apolunes below 40,000 km altitude are pretty stable. They seem resistant to distortion from ...
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What difficulties would there be for a probe to attain a high retrograde solar orbit?

How would one go about sending a probe on an orbit that goes around the Sun in the opposite direction as most planets? Specifically, a rather high orbit - something like Pluto's. What happens to ...
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Why is MOM in a very retrograde orbit?

A recent question/discussion on this site brought out the interesting fact that most probes around Mars are in Sun synchronous near polar orbit. The ISRO web-site for the Mars Orbiter Mission writes ...
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Soft landing by gravity assist?

Could a trajectory exist that gave an object kinetic energy relative to the Earth/Moon that somehow passes zero as the Earth moved across the other's path, tugging on it? And having it happen at a ...
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How exactly does the inclination and direction (specifically retrograde) of orbit affect the velocity I need to attain orbit?

this is my first question here; and a lot of what I've learnt so far has been pretty much self taught so I thought I best hear from professionals. :) First let me set the scene as to what I am trying ...
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Would a satellite in retrograde orbit have a different speed than it would in prograde?

I understand that more power is required to launch a satellite into retrograde orbit, but once it's up there how much does the orbit differ from the more usual West to East? Would you still use $v\...
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How are retrograde orbits attained?

If a satellite is to be inserted into a retrograde orbit (opposite to Earth rotation direction) is it accelerated straight in the desired "westwards" direction until (after overcoming Earth rotation ...