All Questions
5
questions
0
votes
1
answer
100
views
Estimate Saturn's mass [closed]
How can you estimate Saturn's mass using data from Cassini's final moments in September 2017 (apoapsis on September 12 at 1:27 a.m. EDT Saturn time at a distance of about $1.3*10^6$ km from Saturn, ...
2
votes
1
answer
230
views
Angular momentum of a planet about apogee
Angular momentum of a planet about its apogee is maximum at __________
Now, I do know that
Angular momentum of a planet around the focus of the elliptical orbit (the sun) is conserved due to gravity ...
0
votes
1
answer
192
views
Help finding the eccentricity of an orbit
I am trying to find the eccentricity of a planet in order to be able to calculate perihelion and aphelion distances. I can get a lot of the equation, but am having issues with the angular momentum, ...
- 221
-1
votes
1
answer
430
views
Speed at the perihelion [closed]
Hale Bopp has a period of 2400 days, with a mean distance from the sun at 174 AU and 1AU away in perihelion and 357 AU away in aphelion, what is its speed at the perihelion?
what formulas do you need ...
- 291
1
vote
3
answers
676
views
Would it be possible to pull Mars and Earth closer each other?
The burden of travelling between Mars and Earth comes from the distance. If the planets were closer, life could spread to Mars more easily, ensuring the survival of the intelligent lifeforms. What ...
- 127