S/2000 (90) 1

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S/2000 (90) 1
Since the discovery of Antiope's binary nature, the name "Antiope" technically refers to the slightly larger of the two components, with the smaller component bearing the provisional designation S/2000 (90) 1. The two bodies orbit around the common center of mass which lies in the space between them. The orbital period is approximately 16.50 hours, and the eccentricity below 0.006. Every several years, a period of mutual occultations occurs when the asteroid is viewed from Earth. 90 Antiope - Wikipedia, the free encyclopedia
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Short Description Since the discovery of Antiope's binary nature, the name "Antiope" technically refers to the slightly larger of the two components, with the smaller component bearing the provisional designation S/2000 (90) 1. The two bodies orbit around the common center of mass which lies in the space between them. The orbital period is approximately 16.50 hours, and the eccentricity below 0.006. Every several years, a period of mutual occultations occurs when the asteroid is viewed from Earth. 90 Antiope - Wikipedia, the free encyclopedia
Discovered by W. J. Merline, L. M. Close, J. C. Shelton, C. Dumas, F. Menard, C. R. Chapman, and D. C. Slater
Discovery date August 10, 2000
Type Asteroid
AddInfo Antiope I
Satellite of Antiope
Minor planet number S/2000 (90) 1
Orbit Prograde
Rotation Synchronous
Apoapsis 03 172 km
Periapsis 03 170 km
Semi-major axis 03 171 ± 1 km
Distance from Sun 01 3.155 au /1
Eccentricity 0.006
Orbital period 0.687 713 days | 16.505 1 hours
Orbital speed  0.018 km/s
Diameter/Size 02 83.8 km
Dimensions 89.4 × 82.8 × 79.6 km
Mass 1017×4.1 kg
Density 01 1,25 ± 0,05 g/cm3
Surface gravity  0.03 − 0.04 m/s2
Escape velocity 02 35−40 m/s
Rotation period 0.687 713 days | 16.505 1 hours
Albedo geometric 0.060
Temperature mean 02 158 K | −115 C
Temperature max 02 244 K | −29°
Absolute magnitude 9.02
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