(258) Tyche
|
Asteroid (258) Tyche |
|
|---|---|
| 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.