All Questions
Tagged with velocity orbital-mechanics
4
questions
27
votes
5
answers
6k
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Can a planet with no atmosphere be orbited at extremely low altitudes?
Can a planet that has absolutely no atmosphere be orbited by a spacecraft at extremely low "altitudes" (if you'd even call it altitude at such a low orbit.
For instance, if this planet's ...
- 379
2
votes
0
answers
367
views
How to calculate orbital velocity of binary star?
I am trying to simulate the Alpha Centauri AB System. I built the simulation, it works flawlessly when trying to simulate our solar system, and I am now trying to simulate the AB System. I found all ...
- 21
6
votes
1
answer
1k
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Calculating obital velocity from radial velocity
I'm not really a physicist so I don't know if it's possible to get the real orbital velocity of a star from its radial velocity. I'm working on a paper for school and I want to get the mean velocity ...
3
votes
1
answer
319
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Is the radius used in the formula for the escape velocity the average radius of the celestial object or the radius at the starting location?
I learnt that the escape velocity is given by $$v_e = \sqrt{\frac{2GM}{r}}$$
Say I want to launch a rocket from the earth into space and want to calculate the escape velocity $v_e$ (I guess without ...
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