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]
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 | |
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