Questions tagged [orbital-elements]
Questions about the parameters needed to specify the characteristics of an orbit.
Sensitivity of calculated orbital elements to observational errors
These days, we have some very precise ways of making measurements, but I'm sure it wasn't so in Kepler's day. So I am wondering how astronomers of that time could make such accurate determinations of ...
Orbital Elements Transformations
I'm a third year undergrad, and for the project I'm doing this summer, I need to figure out the Earth's position and velocity from the moon's point of view. From the reading I've done, it seems like ...
Why planet's orbit is not perpendicular or random ?
Why planet's orbit is not perpendicular or random ? It always seems each planet is revolving on the same geometric-plane around the star.
Convert orbital elements to positions and velocities
I've written a quick and dirty n-body simulator, but currently it requires initial positions and velocities. I've been looking for a way to convert Keplerian orbital elements to positions and ...
Calculate apsides without knowing eccentricity
How would one go about determining the apsides of an orbit, knowing only the current distance between the 2 bodies, the orbital velocity, and the period? Every formula I've seen requires eccentricity, ...