(287) Nephthys
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Asteroid (287) Nephthys |
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt |
| Major semi-axis | 2,353 AU |
| eccentricity | 0.024 |
| Perihelion - aphelion | 2.297 AU - 2.409 AU |
| Inclination of the orbit plane | 10 ° |
| Length of the ascending node | 142.5 ° |
| Argument of the periapsis | 118 ° |
| Time of passage of the perihelion | September 6, 2011 |
| Sidereal period | 3 a 223 d |
| Mean orbital velocity | 19.4 km / s |
| Physical Properties | |
| Medium diameter | 68 km |
| Albedo | 0.1851 |
| Rotation period | 7 h 36 min |
| Absolute brightness | 8.3 mag |
| Spectral class | S. |
| history | |
| Explorer | CHF Peters |
| Date of discovery | August 25, 1889 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(287) Nephthys is an asteroid of the main asteroid belt , which on 25 August 1889 by Christian Heinrich Friedrich Peters at the observatory of Clinton ( United States was discovered).
The celestial body was named after Nephthys , the goddess of the dead and birth from Egyptian mythology .
Nephthys moves 2.2977 ( perihelion ) to 2.4077 ( aphelion ) astronomical units around the sun in 3.6088 years . The orbit is inclined 10.0234 ° to the ecliptic , the orbital eccentricity is 0.0234.
Nephthys is 68 kilometers in diameter. It has a light surface with an albedo of 0.185. It rotates around its own axis in around 7 hours and 36 minutes.