(12284) Pohl
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Asteroid (12284) Pohl |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main outer belt asteroid |
| Asteroid family | Theobalda family |
| Major semi-axis | 3.1829 AU |
| eccentricity | 0.1961 |
| Perihelion - aphelion | 2.5586 AU - 3.8072 AU |
| Inclination of the orbit plane | 14.6765 ° |
| Length of the ascending node | 187.1330 ° |
| Argument of the periapsis | 33.8959 ° |
| Sidereal period | 5.68 a |
| Mean orbital velocity | 16.65 km / s |
| Physical Properties | |
| Absolute brightness | 13.0 likes |
| history | |
| Explorer | Eleanor Helin |
| Date of discovery | March 17, 1991 |
| Another name | 1991 FP , 1998 QL 67 |
| 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. | |
(12284) Pohl is an asteroid of the main outer belt discovered on March 17, 1991 by the American astronomer Eleanor Helin at the Palomar Observatory ( IAU code 675) in California .
The asteroid belongs to the Theobalda family, a group of asteroids named after (778) Theobalda and less than ten million years old. The ageless (not osculating ) orbital elements of (12284) Pohl are almost identical with those of the three smaller (when one of the absolute brightness of 14.5, 15.8 and 15.6 compared to 12.6 emanates) asteroid: (101755) 1999 FN 23 , (258755) 2002 HF 3 and (355574) 2008 CR 83 .
(12284) Pohl was on 30 November 2011 after the US science fiction - writer Frederik Pohl named. The suggestion for a name came from the science fiction writer and astrophysicist David Brin , after whom an asteroid is also named: (5748) Davebrin .
Web links
- (12284) Pohl in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (12284) Pohl in the Small-Body Database of the Jet Propulsion Laboratory (English).
- Discovery Circumstances by (12284) Pohl according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
- Analysis of the light curve of the asteroid
Individual evidence
- ↑ Bojan Novaković: Portrait of Theobalda as a Young Asteroid Family . Monthly Notices of the Royal Astronomical Society , 2010, Vol. 407, Issue 3 pages 1447–1486 ( PDF , English; 4.4 MB)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)