(21476) Petrie
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Asteroid (21476) Petrie |
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| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt asteroid |
| Major semi-axis | 2.2149 AU |
| eccentricity | 0.0549 |
| Perihelion - aphelion | 2.0932 AU - 2.3366 AU |
| Inclination of the orbit plane | 6.4876 ° |
| Length of the ascending node | 31.4623 ° |
| Argument of the periapsis | 181.1088 ° |
| Time of passage of the perihelion | December 31, 2017 |
| Sidereal period | 3.30 a |
| Mean orbital velocity | 20.01 km / s |
| Physical Properties | |
| Medium diameter | 3.851 km (± 0.077) |
| Albedo | 0.360 (± 0.077) |
| Absolute brightness | 13.9 likes |
| history | |
| Explorer | John Broughton |
| Date of discovery | April 28, 1998 |
| Another name | 1998 HW 101 , 1976 UJ 3 , 1986 XS 2 |
| 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. | |
(21476) Petrie is a main inner belt asteroid discovered on April 28, 1998 by the Australian amateur astronomer John Broughton at the Reedy Creek Observatory ( IAU code 428). The observatory is located in the district of Reedy Creek the city of Gold Coast in Queensland . The asteroid had already been sighted on October 26, 1976 under the provisional designation 1976 UJ 3 at the Crimean Observatory in Nautschnyj and on December 3, 1986 (1986 XS 2 ) at the French Observatoire de Calern .
The mean diameter of the asteroid was calculated to be 3.851 km (± 0.077). Its albedo of 0.360 (± 0.077) corresponds to that of Earth , which is rather bright for an asteroid.
Mean solar distance ( major semi-axis ), eccentricity and inclination of the orbit plane of the asteroid roughly resemble the orbital data of the members of the Flora family, a large group of asteroids named after (8) Flora . Asteroids of this family move in a 4: 9 orbital resonance with the planet Mars around the sun . The group is also called the Ariadne family, after the asteroid (43) Ariadne .
(21476) Petrie was named on April 7, 2005 after the Egyptologist Flinders Petrie (1853-1942). The moon crater Petrie, however, was named in 1970 after the Canadian astronomer Robert Methven Petrie (1906–1966).
See also
Web links
- (21476) Petrie in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (21476) Petrie in the Small-Body Database of the Jet Propulsion Laboratory .
- Discovery Circumstances by (21476) Petrie according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (21476) Petrie at the IAU Minor Planet Center (English)
- ↑ The lunar crater Petrie in the Gazetteer of Planetary Nomenclature of the IAU (WGPSN) / USGS (English)