(32720) Simoeisios
|
Asteroid (32720) Simoeisios |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Jupiter Trojan (L 5 ) |
| Major semi-axis | 5.1920 AU |
| eccentricity | 0.0142 |
| Perihelion - aphelion | 5.1183 AU - 5.2657 AU |
| Inclination of the orbit plane | 7.5074 ° |
| Length of the ascending node | 248.0428 ° |
| Argument of the periapsis | 22.0735 ° |
| Sidereal period | 11.83 a |
| Mean orbital velocity | 13.06 km / s |
| Physical Properties | |
| Medium diameter | 21.130 ± 0.663 km |
| Albedo | 0.099 ± 0.017 |
| Rotation period | 8,951 h |
| Absolute brightness | 12.0 mag |
| history | |
| Explorer |
Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld , Tom Gehrels |
| Date of discovery | October 16, 1977 |
| Another name | 2131 T-3 , 2000 RN 81 |
| 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. | |
(32720) Simoeisios is an asteroid belonging to the group of Jupiter Trojans . This describes asteroids that orbit the sun on the Lagrange points on the orbit of the planet Jupiter . It is assigned to the Lagrange point L 5 , that is, (32720) Simoeisios follows Jupiter in its orbit around the sun by 60 °.
The asteroid was discovered on October 16, 1977 by the Dutch astronomer couple Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld . The discovery took place during the 3rd Trojan survey, during which Tom Gehrels surveyed field plates recorded by the 120 cm Oschin Schmidt telescope of the Palomar observatory at the University of Leiden , 17 years after the start of the Palomar-Leiden- Surveys .
(32720) Simoeisios was named after Simoeisios , a Trojan hero who was killed by Ajax . The naming took place on March 18, 2003. In the case of the asteroids, trailing Trojans are named after Trojan heroes.
See also
Web links
- (32720) Simoeisios in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (32720) Simoeisios in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances of (32720) Simoeisios according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)