(192220) Oicles

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Asteroid
(192220) Oicles
Properties of the orbit ( animation )
Epoch:  4th September 2017 ( JD 2,458,000.5)
Orbit type Jupiter Trojan (L 4 )
Major semi-axis 5.211  AU
eccentricity 0.06
Perihelion - aphelion 4.901 AU - 5.521 AU
Inclination of the orbit plane 12.8 °
Length of the ascending node 211.2 °
Argument of the periapsis 183.5 °
Sidereal period 11.89 a
Mean orbital velocity 13.04 km / s
Physical Properties
Medium diameter ≈15 km
Absolute brightness 13.5 likes
history
Explorer Rainer Kling and Erwin Schwab
Date of discovery September 14, 2007
Another name 2007 RZ 132 , 1995 SP 39
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.

(192220) Oicles 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 14, 2007 by the German amateur astronomers Rainer Kling and Erwin Schwab from the Hans-Ludwig-Neumann-Observatory ( IAU-Code B01) on the Kleiner Feldberg im Taunus . According to Erwin Schwab, the asteroid has a diameter of about 15 kilometers.

designation

Jupiter Trojans are named after fighters in the Trojan War : leading ones like (192220) Oicles after Greek and trailing after Trojan heroes. Exceptions are (617) Patroclus and (624) Hektor , who were named before this regulation was introduced. For reference, is mainly the Iliad , but also - as in this asteroid - the Odyssey of Homer .

The asteroid (192220) was named on July 26, 2010 after the Greek Oikles ( Greek : Οἰκλῆς ), king of Argos and father of Amphiaraos . He accompanied Heracles in the fight against the Trojan king Laomedon , who killed Oikles while he was guarding the Greek ships.

Oikles is not mentioned in the Iliad but in the Odyssey as the son of Antiphates . The death of Antiphates is described in the Iliad. According to the official name in the Minor Planet Center Circulars, however , his father is Mantios , Antiphates' brother. This family relationship can only be found with Pausanias , a Greek travel writer.

See also

Web links

Individual evidence

  1. ↑ a b Asteroid Oicles. In: Homepage of the discoverer Erwin Schwab. Retrieved July 25, 2017 .
  2. ↑ JPL Small-Body Database: 192220 Oicles. In: NASA . Retrieved July 25, 2017 .
  3. ^ Naming of Astronomical Objects. IAU , accessed November 8, 2017 .
  4. ↑ Trojan asteroid. In: Encyclopædia Britannica . Retrieved July 25, 2017 .
  5. ↑ Minor Planet Circulars # 71352. (PDF) In: Minor Planet Center . July 26, 2010, accessed July 25, 2017 .
  6. ^ Johann Samuelersch , Johann Gottfried Gruber : General Encyclopedia of Sciences and Arts. ( Fraktur Schrift ) 1830, p. 344 , accessed on July 25, 2017 .
  7. ↑ Translated by Robert Fagles: HOMER: THE ODYSSEY. (TXT) 2014, accessed July 25, 2017 .
  8. ^ Translated by Johann Heinrich Voß and edited by Oliver Teske: Homer Ilias. (PDF, line 191) February 15, 2008, accessed on July 25, 2017 .
  9. ↑ Pausanias: Pausanias description of Hellas. ( Fraktur font ) 1828, accessed July 25, 2017 .