(5285) Krethon
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Asteroid (5285) Krethon |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Jupiter Trojan (L 4 ) |
| Major semi-axis | 5.1622 AU |
| eccentricity | 0.0544 |
| Perihelion - aphelion | 4.9019 AU - 5.4226 AU |
| Inclination of the orbit plane | 25.1724 ° |
| Length of the ascending node | 144.3084 ° |
| Argument of the periapsis | 258.5516 ° |
| Sidereal period | 11.73 a |
| Mean orbital velocity | 13.13 km / s |
| Physical Properties | |
| Rotation period | 10.44 h |
| Absolute brightness | 10.0 mag |
| history | |
| Explorer | Carolyn Shoemaker |
| Date of discovery | March 9, 1989 |
| Another name | 1989 EO 11 |
| 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. | |
(5285) Krethon 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 4 , which means (5285) Krethon is 60 ° ahead of Jupiter in its orbit around the sun.
The asteroid was discovered on March 9, 1989 by the American astronomer Carolyn Shoemaker at the Palomar Observatory ( IAU code 675) in California .
(5285) Krethon rotates in 10.44 hours, as was determined in 2007 with the 215 cm reflecting telescope of the Leoncito Astronomical Facility (CASLEO) in Argentina .
The asteroid was named after Krethon on July 12, 1995 , a fighter of the Danaer in the Trojan War for Homer . The Jupiter Trojan (5284) was named Orsilocus after his twin brother Orsilochus . Trojans running ahead are named after Greek heroes.
Web links
- (5285) Krethon in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (5285) Krethon in the Small-Body Database of the Jet Propulsion Laboratory of NASA at the California Institute of Technology (Caltech) in Pasadena , California (English)
Individual evidence
- ↑ René Duffard, Mario Daniel Melita, José Luis Ortiz Moreno, Javier Licandro, Iwan P. Williams , Daniel Jones: Light-Curve Survey of the Trojan Asteroids . Publication for the conference Asteroids, Comments, Meteors from July 14th to 18th, 2008 in Baltimore , Maryland ( PDF , English; 140 kB)
- ^ Lutz D. Schmadel : Dictionary of Minor Planet Names . Springer, Heidelberg 2012, 6th edition, page 430 (English)