80 Sappho
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Discovery
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| Discovered by | Norman Robert Pogson |
| Discovery date | May 2, 1864 |
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Designations
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| 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° |
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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 | 7.98 |
80 Sappho (saf'-oe, IPA: /ˈsæfoʊ/) 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.
[edit] References
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