Definition of Periastron. Meaning of Periastron. Synonyms of Periastron

Here you will find one or more explanations in English for the word Periastron. Also in the bottom left of the page several parts of wikipedia pages related to the word Periastron and, of course, Periastron synonyms and on the right images related to the word Periastron.

Definition of Periastron

Periastron
Periastron Per`i*as"tron, n. [NL., fr. Gr. ? about + ? a star.] (Astron.) That point, in the real or apparent orbit of one star revolving around another, at which the former is nearest to the latter.

Meaning of Periastron from wikipedia

- (/æpˈhiːliən/); when discussing orbits around other stars the terms become periastron and apastron. When discussing a satellite of Earth, including the Moon...
- perihelion (for heliocentric orbits), perigee (for geocentric orbits), periastron (for orbits around stars), and so on may replace the word periapsis. (See...
- reach periastron slightly early. Also, periastron advances 4° per year in longitude due to the gravitational field (thus the pulsar's periastron moves...
- In celestial mechanics, the longitude of the periapsis, also called longitude of the pericenter, of an orbiting body is the longitude (measured from the...
- orbits following the periastron epoch of 1894.13 gives a date of 1994.31. Two and one-half 50.09-year orbits following the periastron epoch of 1894.13 gives...
- orbit is moderately eccentric, e = 0.5179; their closest approach or periastron is 11.2 AU (1.68 billion km), or about the distance between the Sun and...
- astronomical units, resulting in an extremely close approach of the two stars at periastron. Stellar m****es of 5.15 and 4.52 solar m****es lead to a theoretical precession...
- the course of its year. The closest approach to its star is called its periastron (perihelion in the Solar System), whereas its ****hest separation from...
- apastron it would receive an insolation similar to that of Earth, while at periastron the insolation would be around 800 times greater, far more than that experienced...
- determine four: semi-major axis, eccentricity, longitude of periastron, and time of periastron. Two parameters remain unknown: inclination and longitude...
Loading...