periapsis


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Related to periapsis: true anomaly

periapsis

(pe-ree-ap -sis) See apsides.

periapsis

[‚per·ē′ap·səs]
(astronomy)
The orbital point nearest the center of attraction of an orbiting body.
References in periodicals archive ?
2], and hence most of [DELTA]v accumulates when the spacecraft is near the periapsis whereas contribution from the long opposite inbound and outbound legs is negligible.
El punto mas elevado de la orbita se llama apoapsis y el mas bajo periapsis (en el caso particular de la Tierra, apogeo y perigeo respectivamente).
Satellite comparison Satellite United States China Characteristics USA-193 Feng Yun-1C Satellite Type Reconnaissance Meteorological Satellite Mass 2,450 kg 880 kg Satellite Apoapsis 257 km 865 km Satellite Periapsis 242 km 845 km Satellite Inclination 58.
Therefore the Sun seems to move faster than average at periapsis, which is currently around 3 January, and slower than average at apoapsis, which is around 4 July.