Questions tagged [eccentric-orbit]

Questions about orbits with high eccentricities, which deviate greatly from perfect circles.

Filter by
Sorted by
Tagged with
4 votes
1 answer
596 views

How would one calculate the synodic period of the Earth and an elliptical orbit?

For example, when would someone with a telescope be able to see Starman and his Roadster (when will the Tesla roadster's elliptical orbit cross ours again, and how would that be calculated?) For two ...
Rithwik Sudharsan's user avatar
13 votes
1 answer
719 views

Determining effect of small variable force on planetary perihelion precession

Is there an analytical technique for determining the effect of a small variable transverse acceleration upon the rate of aspides precession (strictly not a precession but rotation of the line of ...
steveOw's user avatar
  • 1,444
7 votes
3 answers
811 views

Does the Giant Impact Hypothesis explain how the Moon circularized its orbit?

I just read most of Wikipedia's article on the Giant Impact Hypothesis. Basically a large object impacts Earth and creates debris that soon coalesces into the Moon. But there is something I did not ...
DrZ214's user avatar
  • 1,960
7 votes
2 answers
727 views

What is the difference between barycentric-centered and heliocentric-centered coordinates?

When talking about celestial bodies orbiting the sun with a decently circular orbit or small aphelion, the heliocentric orbital parameters are almost identical to the barycentric parameters. However, ...
WarpPrime's user avatar
  • 6,653
6 votes
2 answers
17k views

Why do planets move in an elliptical orbit? [duplicate]

I am a student of class 9 and recently came to know about kepler's law of planetary motion and got confused about the foci and elliptical orbits of planets and some stars.
Babra Ejaz's user avatar
3 votes
0 answers
89 views

What maintains the high orbital eccentricity of many exo-planets near their sun?

Over the last decade we've discovered that many exoplanets not only have highly eccentric orbits, but also orbit very close to their sun. This is true of many classes of stars. I definitely have a ...
n_bandit's user avatar
  • 625
3 votes
1 answer
317 views

Can the Moon provide momentum to an object in Earth's orbit? Gravity Assisted Boost [closed]

Can a satellite maintain an equatorial orbit around Earth near the Moon's orbit to receive partial gravitational boosts by gaining momentum as the satellite passes though the Moon's gravity well? I'...
Muze's user avatar
  • 1
1 vote
2 answers
447 views

How does 'centre of mass' concept work?

We know that two celestial bodies rotate around a center of mass. How does this concept work in case of solar systems where there are several planets versus one/two stars? (Even if the center of mass ...
Sirius's user avatar
  • 425