(221917) Opites
|
Asteroid (221917) Opites |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Jupiter Trojan (L 4 ) |
| Major semi-axis | 5.278 AU |
| eccentricity | 0.076 |
| Perihelion - aphelion | 4.875 AU - 5.681 AU |
| Inclination of the orbit plane | 23.9 ° |
| Length of the ascending node | 328.6 ° |
| Argument of the periapsis | 85 ° |
| Sidereal period | 12.13 a |
| Mean orbital velocity | 12.95 km / s |
| Physical Properties | |
| Absolute brightness | 12.7 mag |
| history | |
| Explorer | Stefan Karge and Erwin Schwab |
| Date of discovery | September 26, 2008 |
| Another name | 2008 SD 83 , 1996 RH 27 |
| 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. | |
(221917) Opites is an asteroid belonging to the group of Jupiter Trojans , which orbit the sun on the Lagrange points on the orbit of the planet Jupiter . It is located at the Lagrange point L 4 , which means that it is 60 ° ahead of Jupiter in its orbit around the sun.
It was discovered on September 26, 2008 by the German amateur astronomers Stefan Karge and Erwin Schwab from the Hans-Ludwig-Neumann-Observatory ( IAU-Code B01) on the Kleiner Feldberg in the Taunus .
designation
Jupiter Trojans after characters from the Iliad of Homer named: anticipatory like (221917) Opites by Greek and trailing after the Trojan hero. Exceptions are (617) Patroclus and (624) Hektor , who were named before this regulation was introduced.
The asteroid (221917) was named on December 10, 2011 in accordance with this regulation after the Greek fighter Opites , a ruler of the Danaer who was killed by Hector in the Trojan War . His death is the only mention of Opites in the Iliad.
See also
Web links
- (221917) Opites in the Small-Body Database of the Jet Propulsion Laboratory (English).
- (221917) Opites at the IAU Minor Planet Center (English)
Individual evidence
- ↑ JPL Small-Body Database: 221917 Opites. In: NASA . Retrieved July 22, 2017 (English).
- ↑ Trojan asteroid. In: Encyclopædia Britannica . Retrieved July 22, 2017 (English).
- ↑ Minor Planet Circulars # 77509. (PDF) In: Minor Planet Center . December 10, 2011, accessed July 22, 2017 .
- ^ Translated by Johann Heinrich Voß and edited by Oliver Teske: Homer Ilias. (PDF, line 295 f.) February 15, 2008, accessed on July 22, 2017 .