331 Etheridgea

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331 Etheridgea
Discovery A
Discoverer Auguste Charlois
Discovery date April 1, 1892
Alternate
designations
B
Category Main belt
Orbital elements C
Epoch 30 January 2005 (JD 2453400.5)
Eccentricity (e) 0.103
Semi-major axis (a) 452.303 Gm (3.023 AU)
Perihelion (q) 405.637 Gm (2.712 AU)
Aphelion (Q) 498.969 Gm (3.335 AU)
Orbital period (P) 1920.198 d (5.26 a)
Mean orbital speed 17.13 km/s
Inclination (i) 6.052°
Longitude of the
ascending node
(Ω)
22.205°
Argument of
perihelion
(ω)
335.206°
Mean anomaly (M) 18.924°
Physical characteristics D
Diameter 75.0 km
Mass unknown
Density unknown
Surface gravity unknown
Escape velocity unknown
Rotation period unknown
Spectral class unknown
Absolute magnitude 9.62
Albedo (geometric) unknown
Mean surface
temperature
unknown

331 Etheridgea is a large Main belt asteroid.

It was discovered by Auguste Charlois on April 1, 1892 in Nice.