(124) Alkeste
Asteroid (124) Alkeste |
|
---|---|
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.