287 Nephthys
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Discovery
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| Discovered by | C. H. F. Peters |
| Discovery date | August 25, 1889 |
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Designations
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| Named after | Nephthys |
| Minor planet category |
Main belt |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 360.26 Gm (2.408 AU) |
| Perihelion | 343.744 Gm (2.298 AU) |
| Semi-major axis | 352.002 Gm (2.353 AU) |
| Eccentricity | 0.023 |
| Orbital period | 1318.315 d (3.61 a) |
| Average orbital speed | 19.42 km/s |
| Mean anomaly | 59.725° |
| Inclination | 10.023° |
| Longitude of ascending node | 142.493° |
| Argument of perihelion | 120.15° |
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Physical characteristics
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| Dimensions | 68.0 km |
| Mass | unknown |
| Mean density | unknown |
| Equatorial surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | unknown |
| Albedo | unknown |
| Temperature | unknown |
| Spectral type | S |
| Absolute magnitude (H) | 8.3 |
287 Nephthys is a large Main belt asteroid. It is classified as an S-type asteroid.
It was discovered by C. H. F. Peters on August 25, 1889 in Clinton, New York.
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