(124) Alkeste
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Asteroid (124) Alkeste |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.629 AU |
| eccentricity | 0.0776 |
| Perihelion - aphelion | 2.425 AU - 2.833 AU |
| Inclination of the orbit plane | 2.95 ° |
| Length of the ascending node | 188.1 ° |
| Argument of the periapsis | 62.3 ° |
| Time of passage of the perihelion | July 7, 2012 |
| Sidereal period | 4 a 96 d |
| Mean orbital velocity | 18.3 km / s |
| Physical Properties | |
| Medium diameter | approx. 76 km |
| Albedo | 0.17 |
| Rotation period | 9 h 55 min |
| Absolute brightness | 8.1 likes |
| Spectral class | S. |
| history | |
| Explorer | CHF Peters |
| Date of discovery | August 23, 1872 |
| 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. | |
(124) Alkeste is an asteroid of the main asteroid belt discovered by Christian Heinrich Friedrich Peters on August 23, 1872 .
The heavenly body was named after Alcestis , a female figure from Greek mythology who sacrificed herself for her husband, but was released from the underworld by Persephone .
Alkeste moves between 2.4 ( perihelion ) astronomical units to 2.8 astronomical units ( aphelion ) in 4.265 years around the sun . The orbit is inclined 3.0 ° to the ecliptic , the orbital eccentricity is 0.08.
Alkeste has a diameter of 76 km. It has a light, silicate-rich surface with an albedo of 0.17. It rotates around its own axis in around 9 hours and 55 minutes.