431 Nephele

From Wikipedia, the free encyclopedia
Jump to: navigation, search
431 Nephele
Discovery
Discovered by Auguste Charlois
Discovery date 18 December 1897
Designations
Named after
Nephele
1897 DN
Main belt (Themis)
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 113.52 yr (41462 d)
Aphelion 3.67837 AU (550.276 Gm)
Perihelion 2.61178 AU (390.717 Gm)
3.14507 AU (470.496 Gm)
Eccentricity 0.16957
5.58 yr (2037.3 d)
16.81 km/s
230.611°
0° 10m 36.152s / day
Inclination 1.82752°
117.229°
216.161°
Earth MOID 1.60112 AU (239.524 Gm)
Jupiter MOID 1.68154 AU (251.555 Gm)
Jupiter Tisserand parameter 3.186
Physical characteristics
Dimensions 95.03±1.6 km
Mass unknown
Mean density
unknown
Equatorial surface gravity
unknown
Equatorial escape velocity
unknown
18.821 h (0.7842 d)
0.0636±0.002
Temperature unknown
C
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.

References[edit]

External links[edit]