Apastron
In a binary star system, each star moves around the other in an elliptical orbit. The point of maximum separation between the two stars is called the apastron.
Apastron
Related Category: Astronomy: General
(ps´trn): see apsis.
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Apsis - point in the orbit of a body where the body is neither approaching nor receding from another body about which it revolves.
apastron
The point in any orbit around a star that is furthest from the star. It usually refers to a companion's orbit about the primary in a binary star system. The converse of periastron.
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apastron
The point of greatest separation of two stars, as in a binary star orbit.
aphelion
The point in its orbit where a planet is farthest from the Sun.
Apastron
the point of greatest separation of two stars, such as in a binary star system.
Apastron The position in an orbit about a star at which the orbiting object is at its greatest distance from the star.
Aperture The unobstructed diameter of the objective lens or primary mirror.
Apastron
The point in the orbit of one component of a binary system where it is farthest from the other.
Aperture ...
Apastron
When two stars that orbit each other are as far away from each other as they can get.
Aphelion ...
apastron - (n.)
For an orbit around a star, the farthest point from that star.
aperture - (n.) ...
APASTRON
The apastron is the point of greatest separation of two stars, as in a binary star system orbit.
APERTURE
The aperture is the size of a main lens (or mirror).
Thus planets in elliptical orbits travel faster at periastron and more slowly at apastron. A spinning body also possesses spin angular momentum. angular momentum (NASA SP-7, 1965) Quantity of rotational motion.
That point at which they are farthest apart is called apastron. pericynthian That point in the trajectory of a vehicle which is closest to the moon. perifocus The point on an orbit nearest the dynamical center ( focus).
265,000 km Apastron (Apuranion)
267,000 km Orbital circumference
1,671,000 km Orbital period
4.144 d Mean orbital speed
4.668 km/s Minimum orbital speed
4.650 km/s Maximum orbital speed
4.686 km/s Inclination
0.
This distance is not the same as its apastron, as no planet's orbit has its star at its exact centre.[81]
The inclination of a planet tells how far above or below an established reference plane its orbit lies.
Its closest distance to its is called its periastron (perihelion in the Solar System), while its farthest distance from the star is called its apastron (aphelion in the Solar System).
Definition: periastron: The point of closest approach of two stars, as in a binary star orbit. Opposite of apastron.
Space Tragedies9 Planets in Nine DaysAstronomy 101
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of closest approach between the two stars in a binary star system. This position is the same as the periapsis of the orbit, but specifically refers to orbits around other stars. The point of maximum separation between the two stars is the apastron.
Apse
The Concise Oxford Dictionary of World Religions
periastron
The Columbia Encyclopedia, Sixth Edition
apsides
The Columbia Encyclopedia, Sixth Edition
apastron
The Columbia Encyclopedia, Sixth Edition ...
They were closest together (periastron) in 1886 and will be farthest apart (apastron) in 2075 (a long wait). Application of Kepler's laws yields a total mass of 7.5 solar, short of the sum of 9.2 obtained from stellar structure theory.
Also AR coating. A layer of material of lower refractive index of just the right thickness (1/4 wave) is deposited on the optical surface to be coated. More complex coatings are possible which cover a large wavelength range. [McL97]
Apastron ...
 See also: Orbit, Astronomy, Sun, Solar, Planet
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