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 |
10^{17}×4.1 kg |

Density |
^{01 }1,25 ± 0,05 g/cm^{3} |

Surface gravity |
^{ }0.03 − 0.04 m/s^{2} |

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 |