periastron's Usage Examples:

perihelion (for heliocentric orbits), perigee (for geocentric orbits), periastron (for orbits around stars), and so on may replace the word periapsis.

(/æpˈhiːliən/); when discussing orbits around other stars the terms become periastron and apastron.

period, semi-major axis, eccentricity, inclination, longitude of periastron, time of periastron, maximum time variation, and time of transit, including all.

At periastron, the planet is only 1.

The periastron (closest) distance is 1.

At periastron, the planet comes almost as close as Earth orbits the Sun, and at apoastron.

3 AU at periastron to 23.

However, the orbit is very eccentric, so at periastron this distance is almost halved, and at apastron it is as distant as Mars.

orientation of periastron changes by about 4.

2 degrees per year in direction of the orbital motion (relativistic precession of periastron).

At periastron, the distance is 0.

astronomical units, resulting in an extremely close approach of the two stars at periastron.

737 AU at periastron to 1.

At periastron distance, it will have distance from the star similar to Mars’ distance.

They show a steady change in their longitude of periastron, showing an apsidal period of 203±4 years.

At periastron, the distance is 1.

speed ? km/s Inclination ? Angular distance ? mas Longitude of periastron ?° Time of periastron ? JD Semi-amplitude ? m/s Satellite of MOA-2011-BLG-262L Star.