(2128) Wetherill
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Asteroid (2128) Wetherill |
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| Properties of the orbit ( animation ) | |
| Orbit type | Main belt asteroid |
| Major semi-axis | 2.7337 AU |
| eccentricity | 0.3818 |
| Perihelion - aphelion | 1.6899 AU - 3.7776 AU |
| Inclination of the orbit plane | 16.9118 ° |
| Length of the ascending node | 358.4735 ° |
| Argument of the periapsis | 331.9775 ° |
| Sidereal period | 4.52 a |
| Mean orbital velocity | 18.02 km / s |
| Physical Properties | |
| Absolute brightness | 14.3 mag |
| history | |
| Explorer | Eleanor Helin |
| Date of discovery | September 26, 1973 |
| Another name | 1973 SB , 1973 TS |
| 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. | |
(2128) Wetherill is an asteroid of the main belt , which from the September 26, 1973 American US astronomer Eleanor Helin at Palomar Observatory ( IAU code 675) on the top of Palomar Mountain in California was discovered.
The asteroid was named after the American geophysicist and astronomer George Wetherill (1925-2006), who developed methods for determining the age of rocks from the ratio of radioactive isotopes and their decay products and who studied the formation and development of planetary systems.
See also
Web links
- Asteroid Wetherill: Discovery Circumstances according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics, Cambridge, USA
- (2128) Wetherill in the Small-Body Database of the Jet Propulsion Laboratory (English).
- (2128) Wetherill in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).