9165 Raup
| Discovery | |
|---|---|
| Discovered by |
C. Shoemaker E. Shoemaker |
| Discovery site | Palomar Obs. |
| Discovery date | 27 September 1987 |
| Designations | |
| MPC designation | (9165) Raup |
|
Named after
|
David M. Raup (paleontologist) |
|
1987 SJ3 · 1955 BF1 1973 UH |
|
| main-belt · Hungaria | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 28.34 yr (10,350 days) |
| Aphelion | 2.1796 AU |
| Perihelion | 1.7933 AU |
| 1.9864 AU | |
| Eccentricity | 0.0972 |
| 2.80 yr (1,023 days) | |
| 194.44° | |
| 0° 21m 7.2s / day | |
| Inclination | 24.600° |
| 15.005° | |
| 332.00° | |
| Physical characteristics | |
| Dimensions | 4.62 km (calculated) 4.839±0.167 km |
|
560±25 h (superseded) 1320±10 h |
|
| 0.30 (assumed) 0.329±0.058 |
|
| S | |
| 13.40 · 13.6 | |
9165 Raup, provisional designation 1987 SJ3, is a stony Hungaria asteroid and exceptionally slow rotator from the inner regions of the asteroid belt, approximately 4.7 kilometers in diameter. It was discovered on 27 September 1987, by American astronomer couple Carolyn and Eugene Shoemaker at the U.S. Palomar Observatory in California.
The bright S-type asteroid is a member of the Hungaria family, which form the innermost dense concentration of asteroids in the Solar System. It orbits the Sun at a distance of 1.8–2.2 AU once every 2 years and 10 months (1,023 days). Its orbit has an eccentricity of 0.10 and an inclination of 25° with respect to the ecliptic. The first precovery was taken at the discovering observatory in 1955, extending the asteroid's observation arc by 32 years prior to its discovery.
In September 2015, a rotational light-curve was obtained for this asteroid from photometric observations by U.S. astronomer Brian D. Warner at the Palmer Divide Station, Colorado. It gave a well-defined rotation period of 1320±10 hours with a brightness variation of 1.34 magnitude (U=3-). As of 20116, it is the 3rd slowest rotating minor planet in the Light Curve Data Base (LCDB). Also, the light-curve's high amplitude indicates that the body has a non-spheroidal shape. Brian Warner's 2015-observation supersedes a previously obtained light-curve that gave a significantly shorter period of 560±25 hours with an amplitude of 1.05 magnitude (U=2).
...
Wikipedia