10645 Brač
| Discovery | |
|---|---|
| Discovered by | K. Korlević |
| Discovery site | Višnjan Obs. |
| Discovery date | 14 March 1999 |
| Designations | |
| MPC designation | (10645) Brač |
|
Named after
|
Brač (Croatian island) |
|
1999 ES4 · 1962 TN 1968 BF · 1975 TJ1 1980 YK · 1986 EH5 1988 SX4 |
|
| main-belt · Eunomia | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 53.68 yr (19,606 days) |
| Aphelion | 3.1431 AU |
| Perihelion | 2.1754 AU |
| 2.6593 AU | |
| Eccentricity | 0.1820 |
| 4.34 yr (1,584 days) | |
| 179.59° | |
| 0° 13m 38.28s / day | |
| Inclination | 12.523° |
| 351.59° | |
| 44.857° | |
| Physical characteristics | |
| Dimensions | 9.60 km (calculated) 10.26±0.11 km |
|
2.785±0.005 h 2.78592±0.00003 h |
|
|
0.202±0.038 0.21 (assumed) |
|
| S · LS | |
| 12.5 · 12.4 · 12.3 · 12.41±0.50 | |
10645 Brač, provisional designation 1999 ES4, is a stony Eunomia asteroid from the middle region of the asteroid belt, approximately 10 kilometers in diameter. It was discovered on 14 March 1999, by Croatian astronomer Korado Korlević at Višnjan Observatory, and named after the Croatian island of Brač.
The asteroid is a member of the Eunomia family, a large group of S-type asteroids and the most prominent family in the intermediate main-belt. It orbits the Sun at a distance of 2.2–3.1 AU once every 4 years and 4 months (1,584 days). Its orbit has an eccentricity of 0.18 and an inclination of 13° with respect to the ecliptic. The first precovery was taken at the U.S. Goethe Link Observatory in 1962, extending the asteroid's observation arc by 37 years prior to discovery.
In October 2014, photometric observations by Italian astronomer Silvano Casulli gave a rotational lightcurve with a period of 2.78592±0.00003 hours and a brightness amplitude of 0.31 in magnitude (U=3-). Three weeks later, a second lightcurve was obtained at the U.S. Etscorn Campus Observatory in New Mexico, rendering a concurring period of 2.785±0.005 with an identical variation in brightness (U=3-).
...
Wikipedia