285 Regina
 Orbital diagram | |
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 3 August 1889 |
| Designations | |
| (285) Regina | |
| Pronunciation | /rɪˈdʒaɪnə/ rij-EYE-nə[1] |
| A889 PA, 1911 QJ 1951 AC1 | |
| Main belt | |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 104.63 yr (38215 d) |
| Aphelion | 3.72130 AU (556.699 Gm) |
| Perihelion | 2.44540 AU (365.827 Gm) |
| 3.08335 AU (461.263 Gm) | |
| Eccentricity | 0.20690 |
| 5.41 yr (1977.6 d) | |
Average orbital speed | 16.97 km/s |
| 137.349° | |
| 0° 10m 55.348s / day | |
| Inclination | 17.6192° |
| 311.385° | |
| 14.4439° | |
| Physical characteristics | |
| Dimensions | 45.13±2.2 km |
| 9.542 h (0.3976 d) | |
| 0.0547±0.006 | |
| Temperature | unknown |
| 10.7 | |
285 Regina is a typical, although fairly large, Main belt asteroid.[2] It was discovered by Auguste Charlois on 3 August 1889 in Nice, France. The asteroid is a suspected interloper in the Eucharis asteroid family.[3]
Analysis of the asteroid light curve generated from photometric data collected during 2008 show a rotation period of 9.542±0.001 h with a brightness variation of 0.16±0.03 in magnitude.[4]
References
[edit]- ^ "Regina". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
- ^ a b "285 Regina". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
- ^ Novaković, Bojan; et al. (November 2011), "Families among high-inclination asteroids", Icarus, 216 (1): 69–81, arXiv:1108.3740, Bibcode:2011Icar..216...69N, doi:10.1016/j.icarus.2011.08.016.
- ^ Pilcher, Frederick (April 2010), "Rotation Period Determination for 285 Regina", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, vol. 37, no. 2, p. 50, Bibcode:2010MPBu...37...50P.
External links
[edit]- 285 Regina at AstDyS-2, Asteroids—Dynamic Site
- 285 Regina at the JPL Small-Body Database
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