Linked Questions
10 questions linked to/from Rendezvouses in halo or lissajous orbits
18
votes
2
answers
5k
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James Webb telescope; limits to propellant lifetime?
There is a comprehensive article on Wikipedia on the James Webb telescope. It includes a statement regarding the operational lifetime being nominally five years and optimistically ten years. However ...
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18
votes
2
answers
2k
views
Is this what station keeping maneuvers look like, or just glitches in data? (SOHO via Horizons)
I've been enjoying the JPL Horizons web interface and after I discovered the incredibly extensive database associated with SOHO (Solar and Heliospheric Observatory, also see sohowww.nascom.nasa.gov) ...
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15
votes
1
answer
19k
views
What is a near rectilinear halo orbit?
A proposed option for the lunar orbit of a Lunar Orbital Platform-Gateway (formerly known as Deep Space Gateway) is a near rectilinear halo orbit, or NRHO.
This excellent answer discusses the ...
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7
votes
3
answers
3k
views
What is the required burn to keep a satellite at a Lagrangian point?
When a satellite reaches a Lagrangian point, it has a non-zero velocity $v_1$ because of the transfer orbit in which it had already been. What burn, say, $\Delta v$, one needs if the satellite is ...
user11175
13
votes
1
answer
7k
views
Why is a near rectilinear halo orbit proposed for LOP-G (formerly known as Deep Space Gateway?)
Why is a near rectilinear halo orbit a good place for a Lunar Orbital Platform-Gateway (formerly known as Deep Space Gateway)? Are there specific logistical and orbital-mechanical advantages over ...
- 151k
5
votes
3
answers
2k
views
How do spacecraft reach Lagrange points?
As I understand, to reach a Lagrange point the spacecraft would need to slow down. Also, can spacecraft passing nearby Lagrange points get captured within the point?
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0
votes
1
answer
304
views
Why are there no Mass Catchers?
When moving around in space you have to spend delta-v to accelerate and decelerate, which necessitates having an engine and control system. It would follow that a mass "catcher" would be a ...
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4
votes
1
answer
463
views
Do ("non-halo") Lissajous orbits have stable/unstable manifolds?
The question Did DSCOVR travel “along the stable manifold of its future SE L1 Halo orbit” to get there? is specific to DSCOVR's trajectory from Earth to its primarily heliocentric orbit near Sun-Earth ...
- 151k
2
votes
0
answers
428
views
Did DSCOVR travel "along the stable manifold of its future SE L1 Halo orbit" to get there?
I just wrote (and have since removed) the following paragraph in this answer to How many times do you have to circle the Earth to break orbit?:
As can be heard in this video SpaceX's launch of the ...
- 151k
1
vote
0
answers
89
views
Earth-Sun decayed L1 to L4 transfer
Assume CR3BP (Circular Restricted 3-Body Problem) where a satellite occupies the Earth-Sun L1 point. The satellite dies, stops station-keeping, experiences a small perturbation (minimal effect on ...
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