(11277) Ballard
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Asteroid (11277) Ballard |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | Inner main belt asteroid |
| Major semi-axis | 2.4022 AU |
| eccentricity | 0.2395 |
| Perihelion - aphelion | 1.8269 AU - 2.9775 AU |
| Inclination of the orbit plane | 22.7849 ° |
| Length of the ascending node | 254.6555 ° |
| Argument of the periapsis | 43.5846 ° |
| Sidereal period | 3.72 a |
| Mean orbital velocity | 19.21 km / s |
| Physical Properties | |
| Absolute brightness | 13.1 mag |
| history | |
| Explorer | Carolyn Shoemaker , Eugene Shoemaker |
| Date of discovery | October 8, 1988 |
| Another name | 1988 TW 2 , 1995 MG |
| 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. | |
(11277) Ballard is an asteroid of the main inner belt discovered on October 8, 1988 by the American astronomer couple Carolyn and Eugene Shoemaker at the Palomar Observatory ( IAU code 675) in California .
On July 15 and 19, 2010, a light curve of the asteroid was recorded by the Italian astronomer Albino Carbognani with an 81 cm Ritchey-Chrétien-Cassegrain telescope at the Osservatorio astronomico della Regione Autonoma Valle d'Aosta in Nus- Saint-Barthélemy . The 49 measurements made indicate that the rotation period should be more than ten hours.
Mean distance from the Sun ( major semi-axis ), eccentricity and inclination of the orbit plane of the asteroid roughly correspond to the Phocaea family, a group of asteroids named after (25) Phocaea . The solar orbit of (11277) Ballard is strongly inclined at more than 22 ° compared to the ecliptic of the solar system , which is characteristic of Phocaea asteroids.
(11277) Ballard was named on May 26, 2002 after the American underwater archaeologist Robert Ballard , who was best known for the discovery of the wreck of the Titanic .
Web links
- (11277) Ballard in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- (11277) Ballard in the Small-Body Database of the Jet Propulsion Laboratory .
- Discovery Circumstances by (11277) Ballard according to the Minor Planet Center of the International Astronomical Union at the Harvard-Smithsonian Center for Astrophysics in Cambridge , Massachusetts (English)
Individual evidence
- ^ Albino Carbognani: Lightcurves and Periods of Eighteen NEAs and MBAs . The Minor Planet Bulletin, vol. 38, no. 1, 01/2011, pages 57 to 59 and 61, bibcode : 2011MPBu ... 38 ... 57C (English)