Either of two extreme points in a celestial object's orbit
Several terms redirect here. For other uses, see Apogee (disambiguation), Perigee (disambiguation), and Apse (disambiguation).
Not to be confused with Apse or Aspis.
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The apsides refer to the farthest (2) and nearest (3) points reached by an orbiting planetary body (2 and 3) with respect to a primary, or host, body (1)
An apsis (from Ancient Greek ἁψίς (hapsís) 'arch, vault'; pl. apsides/ˈæpsɪˌdiːz/AP-sih-deez)[1][2] is the farthest or nearest point in the orbit of a planetary body about its primary body. The line of apsides is the line connecting the two extreme values.
Apsides pertaining to orbits around the Sun have distinct names to differentiate themselves from other apsides; these names are aphelion for the farthest and perihelion for the nearest point in the solar orbit.[3] The Moon's two apsides are the farthest point, apogee, and the nearest point, perigee, of its orbit around the host Earth. Earth's two apsides are the farthest point, aphelion, and the nearest point, perihelion, of its orbit around the host Sun. The terms aphelion and perihelion apply in the same way to the orbits of Jupiter and the other planets, the comets, and the asteroids of the Solar System.
An apsis (from Ancient Greek ἁψίς (hapsís) 'arch, vault'; pl. apsides /ˈæpsɪˌdiːz/ AP-sih-deez) is the farthest or nearest point in the orbit of a planetary...
from Latin absis, 'arch, vault'; from Ancient Greek ἀψίς, apsis, 'arch'; sometimes written apsis; pl.: apsides) is a semicircular recess covered with a hemispherical...
APSI (an abbreviation of "Agencia Publicitaria de Servicios Informativos") was a Chilean magazine aimed as means of political opposition to the Pinochet...
argument of periastron (for orbits around stars), and so on, may be used (see apsis for more information). An argument of periapsis of 0° means that the orbiting...
perspective in the Roman Emperor Constantine's Aula Palatina - Trier: The windows and the coffer in the apse are smaller, and the apsis has a raised floor....
the Moon's mean longitude, a is the longitude at apogee, P is epicycle of apsis, R=3438'. Besides worship in Navagraha temples, Chandra is also worshipped...
Part of a series on Astrodynamics Orbital mechanics Orbital elements Apsis Argument of periapsis Eccentricity Inclination Mean anomaly Orbital nodes Semi-major...
explained in 2011 that he based calculations on 90% of the difference in lunar apsis extremes for the solar year. In other words, a full or new moon is considered...
3,233 days (8.85 years). It takes the Moon longer to return to the same apsis because it has moved ahead during one revolution. This longer period is...
1: Romans land and capture Apsis (256 BC) 2: Roman victory at Adys (256 BC) 3: Romans capture Tunis (256 BC) 4: Xanthippus sets out from Carthage with...
Part of a series on Astrodynamics Orbital mechanics Orbital elements Apsis Argument of periapsis Eccentricity Inclination Mean anomaly Orbital nodes Semi-major...
revolutions on its own axis every 4,320,000 earth years, an Epicycle of Apsis as 60 degrees, and had an apogee (aphelia) of 240 degrees in 499 CE; while...
completes 364,220 revolutions every 4,320,000 earth years, an Epicycle of Apsis as 32 degrees, and had an apogee (aphelia) of 160 degrees in 499 CE; while...
Part of a series on Astrodynamics Orbital mechanics Orbital elements Apsis Argument of periapsis Eccentricity Inclination Mean anomaly Orbital nodes Semi-major...
Part of a series on Astrodynamics Orbital mechanics Orbital elements Apsis Argument of periapsis Eccentricity Inclination Mean anomaly Orbital nodes Semi-major...
Part of a series on Astrodynamics Orbital mechanics Orbital elements Apsis Argument of periapsis Eccentricity Inclination Mean anomaly Orbital nodes Semi-major...
pointing into the direction of the vernal equinox). Apsidal precession Apsis Eccentricity (orbit) Orbit: circular, elliptic, parabolic and hyperbolic...
Part of a series on Astrodynamics Orbital mechanics Orbital elements Apsis Argument of periapsis Eccentricity Inclination Mean anomaly Orbital nodes Semi-major...
Part of a series on Astrodynamics Orbital mechanics Orbital elements Apsis Argument of periapsis Eccentricity Inclination Mean anomaly Orbital nodes Semi-major...
have pyramidal spires. To the east the church ends in a small three-sided apsis. The main entrance below the two western towers is decorated with a granite...
Part of a series on Astrodynamics Orbital mechanics Orbital elements Apsis Argument of periapsis Eccentricity Inclination Mean anomaly Orbital nodes Semi-major...
1540. The left nave has a small altar dedicated to St Sebastian in its apsis. The Grand Hotel Zell am See is situated in a unique position on a private...
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