285 Regina

285 Regina
Discovery
Discovered by	Auguste Charlois
Discovery date	3 August 1889
Designations
Minor planet category	Main belt
Orbital characteristics^[1]
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)
Semi-major axis	3.08335 AU (461.263 Gm)
Eccentricity	0.20690
Orbital period	5.41 yr (1977.6 d)
Average orbital speed	16.97 km/s
Mean anomaly	137.349°
Mean motion	0° 10^m 55.348^s / day
Inclination	17.6192°
Longitude of ascending node	311.385°
Argument of perihelion	14.4439°
Earth MOID	1.43585 AU (214.800 Gm)
Jupiter MOID	1.61715 AU (241.922 Gm)
Jupiter Tisserand parameter	3.123
Physical characteristics
Dimensions	7004451300000000000♠45.13±2.2 km
Mass	unknown
Mean density	unknown
Equatorial surface gravity	unknown
Equatorial escape velocity	unknown
Rotation period	9.542 h (0.3976 d)
Geometric albedo	6998547000000000000♠0.0547±0.006
Temperature	unknown
Spectral type	unknown
Absolute magnitude (H)	10.7

285 Regina is typical, although fairly large Main belt asteroid.^[1] It was discovered by Auguste Charlois on August 3, 1889 in Nice.

References

Minor planets navigator

284 Amalia 285 Regina 286 Iclea

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