(258) Tyche
Asteroid (258) Tyche |
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Properties of the orbit ( animation ) | |
Orbit type | Middle main belt |
Asteroid family | Eunomia family |
Major semi-axis | 2,615 AU |
eccentricity | 0.206 |
Perihelion - aphelion | 2.076 AU - 3.154 AU |
Inclination of the orbit plane | 14.3 ° |
Length of the ascending node | 207.7 ° |
Argument of the periapsis | 154.7 ° |
Time of passage of the perihelion | June 29, 2010 |
Sidereal period | 4 a 84 d |
Mean orbital velocity | 18.2 km / s |
Physical Properties | |
Medium diameter | 65 km |
Albedo | 0.1676 |
Rotation period | 10 h 2 min |
Absolute brightness | 8.5 likes |
Spectral class | S. |
history | |
Explorer | KTR Luther |
Date of discovery | May 4, 1886 |
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. |
(258) Tyche is an asteroid of the main asteroid belt that was discovered on May 4, 1886 by Karl Theodor Robert Luther at the Düsseldorf observatory .
The heavenly body was named after the Greek goddess Tyche .
Tyche moves from 2.0792 ( perihelion ) to 3.1504 ( aphelion ) astronomical units around the Sun in 4.2283 years . The orbit is inclined 14.2931 ° to the ecliptic , the orbital eccentricity is 0.2048.
Tyche has a diameter of 65 kilometers. It has a relatively light, silicate-rich surface with an albedo of 0.168. It rotates around its own axis in around 10 hours and 2 minutes.