331 Etheridgea

331 Etheridgea
Discovery
Discovered by	Auguste Charlois
Discovery date	1 April 1892
Designations
Minor planet category	Main belt
Orbital characteristics^[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc	123.95 yr (45274 d)
Aphelion	3.32623 AU (497.597 Gm)
Perihelion	2.72055 AU (406.988 Gm)
Semi-major axis	3.02339 AU (452.293 Gm)
Eccentricity	0.10016
Orbital period	5.26 yr (1920.2 d)
Average orbital speed	17.13 km/s
Mean anomaly	88.5392°
Mean motion	0° 11^m 14.939^s / day
Inclination	6.05385°
Longitude of ascending node	22.0346°
Argument of perihelion	333.055°
Earth MOID	1.71692 AU (256.848 Gm)
Jupiter MOID	2.10384 AU (314.730 Gm)
Jupiter Tisserand parameter	3.229
Physical characteristics
Dimensions	7004749200000000000♠74.92±2.7 km
Mass	unknown
Mean density	unknown
Equatorial surface gravity	unknown
Equatorial escape velocity	unknown
Rotation period	25.315 h (1.0548 d)
Geometric albedo	6998446999999999999♠0.0447±0.003
Temperature	unknown
Spectral type	unknown
Absolute magnitude (H)	9.62

331 Etheridgea is a large main belt asteroid.^[1] It was discovered by Auguste Charlois on April 1, 1892 in Nice.

References

Minor planets navigator

330 Adalberta 331 Etheridgea 332 Siri

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