Apastron
(n.) That point in the orbit of a double star where the smaller star is farthest from its primary. | ||||
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Apastron definition was found in categories: Science & Technology(1) Language, Idioms & Slang(1) Encyclopedia(1)
Apastron Definition from Science & Technology Dictionaries & Glossaries
| ASTRONOMY UNBOUND |
Apastron
The point on an elliptical orbit of a celestial object around a star where the radius has the greatest value. See also periastron .
The point on an elliptical orbit of a celestial object around a star where the radius has the greatest value. See also periastron .
Apastron Definition from Language, Idioms & Slang Dictionaries & Glossaries
| hEnglish - advanced version |
apastron
apastron
\ap*as"tron\ (&?;), n. [gr. &?; from + &?; star.] (astron.) that point in the orbit of a double star where the smaller star is farthest from its primary.
apastron
\ap*as"tron\ (&?;), n. [gr. &?; from + &?; star.] (astron.) that point in the orbit of a double star where the smaller star is farthest from its primary.
Apastron Definition from Encyclopedia Dictionaries & Glossaries
| Wikipedia English - The Free Encyclopedia |
Apsis
- In architecture, apsis is a synonym for apse.
- Aphelia redirects here. For the moth genus, see Aphelia (moth).
- Apogee redirects here. For the video game publishing and developing company, see Apogee Software. For the album by Bongzilla, see Apogee (album).
In astronomy, an apsis, plural apsides (IPA: //) is the point of greatest or least distance of the elliptical orbit of an astronomical object from its center of attraction, which is generally the center of mass of the system.
The point of closest approach is called the periapsis or pericentre and the point of farthest excursion is called the apoapsis (Greek από, from, which becomes απ before a vowel, and αφ before rough breathing), apocentre or apapsis (the latter term, although etymologically more correct, is much less used). A straight line drawn through the periapsis and apoapsis is the line of apsides. This is the major axis of the ellipse, the line through the longest part of the ellipse.
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