(30704) Phegeus
Asteroid (30704) Phegeus |
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Properties of the orbit ( animation ) | |
Orbit type | Jupiter Trojan (L 5 ) |
Major semi-axis | 5.2273 AU |
eccentricity | 0.0373 |
Perihelion - aphelion | 5.0322 AU - 5.4224 AU |
Inclination of the orbit plane | 14.9116 ° |
Length of the ascending node | 20.5149 ° |
Argument of the periapsis | 287.8645 ° |
Sidereal period | 11.95 a |
Mean orbital velocity | 13.09 km / s |
Physical Properties | |
Medium diameter | 27.002 ± 0.362 km |
Albedo | 0.088 |
Absolute brightness | 11.3 mag |
history | |
Explorer |
Cornelis Johannes van Houten , Ingrid van Houten-Groeneveld , Tom Gehrels |
Date of discovery | October 16, 1977 |
Another name | 3250 T-3 , 1999 RG 246 , 2000 RN 38 |
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. |
(30704) Phegeus 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, (30704) Phegeus 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 .
(30704) Phegeus was named on March 18, 2003 after Phegeus , a son of Dares who was a Hephaestus priest in Troy . In the case of asteroids, trailing Trojans are named after Trojan heroes.
See also
Web links
- (30704) Phegeus in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (30704) Phegeus in the Small-Body Database of the Jet Propulsion Laboratory .
- Discovery Circumstances of (30704) Phegeus according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)