431 Nephele

431 Nephele
Discovery
Discovered by	Auguste Charlois
Discovery date	December 18, 1897
Designations
Named after	Nephele
Alternative names	1897 DN
Minor planet category	Main belt (Themis)
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion	551.872 Gm (3.689 AU)
Perihelion	387.107 Gm (2.588 AU)
Semi-major axis	469.489 Gm (3.138 AU)
Eccentricity	0.175
Orbital period	2030.677 d (5.56 a)
Average orbital speed	16.81 km/s
Mean anomaly	210.253°
Inclination	1.827°
Longitude of ascending node	117.417°
Argument of perihelion	212.678°
Physical characteristics
Dimensions	95.0 km
Mass	unknown
Mean density	unknown
Surface gravity	unknown
Escape velocity	unknown
Rotation period	unknown
Albedo	unknown
Temperature	unknown
Spectral type	C
Absolute magnitude (H)	8.72

431 Nephele is a large Themistian asteroid. It is spectral C-type and is probably composed of carbonaceous material.

It was discovered by Auguste Charlois on December 18, 1897 in Nice.

External links

431 Nephele at the JPL Small-Body Database

Discovery · Orbit diagram · Orbital elements · Physical parameters

Minor planets navigator

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