Discovery
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Discovered by | Norman Robert Pogson |
Discovery date | May 2, 1864 |
Designations
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Named after | Sappho |
Alternate name(s) | |
Minor planet category |
Main belt |
Epoch December 31, 2006 (JD 2454100.5) | |
Aphelion | 412.343 Gm (2.756 AU) |
Perihelion | 274.831 Gm (1.837 AU) |
Semi-major axis | 343.587 Gm (2.297 AU) |
Eccentricity | 0.200 |
Orbital period | 1271.350 d (3.48 a) |
Average orbital speed | 19.46 km/s |
Mean anomaly | 262.909° |
Inclination | 8.664° |
Longitude of ascending node | 218.819° |
Argument of perihelion | 139.111° |
Physical characteristics
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Dimensions | 78.4 km |
Mass | 5.0×1017 kg |
Mean density | ? g/cm³ |
Equatorial surface gravity | 0.0219 m/s² |
Escape velocity | 0.0414 km/s |
Rotation period | ? d |
Albedo | 0.185 [1] |
Temperature | ~184 K |
Spectral type | S |
Absolute magnitude (H) | 7.98 |
80 Sappho ( /ˈsæfoʊ/ saf-oh) is a quite large main-belt asteroid. It was discovered by Norman Pogson on May 2, 1864, and is named after Sappho, the Greek poet.
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