(21791) Mattweegman
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Asteroid (21791) Mattweegman |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt asteroid |
| Asteroid family | Vesta family |
| Major semi-axis | 2.3760 AU |
| eccentricity | 0.1506 |
| Perihelion - aphelion | 2.0183 AU - 2.7337 AU |
| Inclination of the orbit plane | 7.5975 ° |
| Length of the ascending node | 48.8319 ° |
| Argument of the periapsis | 288.7842 ° |
| Sidereal period | 3.66 a |
| Mean orbital velocity | 19.32 km / s |
| Physical Properties | |
| Absolute brightness | 14.4 mag |
| history | |
| Explorer | LINEAR |
| Date of discovery | September 29, 1999 |
| Another name | 1999 SR 7 , 1981 SV 8 , 1981 UL 25 , 1998 HY 19 |
| 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. | |
(21791) Mattweegman is a main inner belt asteroid that was discovered on September 29, 1999 at the Lincoln Laboratory Experimental Test System ( IAU code 704) in Socorro , New Mexico as part of the Lincoln Near Earth Asteroid Research (LINEAR) project. Unconfirmed sightings of the asteroid had already occurred on September 24, 1981 at the Karl Schwarzschild Observatory in Tautenburg and on October 25 and 26, 1981 at the Palomar Observatory in California , and in April 1998 at the Lincoln Near Earth Asteroid Research (1998 HY 19 ).
The asteroid belongs to the Vesta family , a large group of asteroids named after (4) Vesta , the second largest asteroid and third largest celestial body in the main belt. The ageless (not osculating ) orbital elements of (21791) Mattweegman are almost identical with those of four smaller (when one of the absolute brightness starting from 16.2, 15.9, 16.4 and 16.9 compared to 14.3) asteroid : (179728) 2002 RG 95 , (183281) 2002 TC 278 , (221025) 2005 QA 21 and (274301) Wikipedia .
(21791) Mattweegman was named on August 22, 2005 after Matt Weegman (* 1988), a Winona Senior High School student in Winona , Minnesota , for winning the 2005 Intel International Science and Engineering Fair , a pre-university research competition in in the Environmental Sciences Team Project category with his twin brother, Mitch, won second prize. His project was titled A Nutritional Comparison of Historic Lesser Scaup Foods of the Zebra Mussel (A nutritional comparison between the traditional food of the violet duck and the mongoose ). The asteroids (21633) Hsingpenyuan and (21634) Huangweikang were named after the overall winners in the 2005 team category .
See also
Web links
- (21791) Mattweegman in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (21791) Mattweegman in the Small-Body Database of the Jet Propulsion Laboratory .
- Discovery Circumstances by (21791) Mattweegman according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ↑ (21791) Mattweegman at the IAU Minor Planet Center (English)
- ↑ The family status of the asteroids in the AstDyS-2 database (English, HTML; 51.4 MB)
- ↑ 2005 Intel ISEF Grand Awards ( Memento from July 10, 2012 in the Internet Archive ) (English)