2085 Henan

2085 Henan, provisional designation 1965 YA, is a potentially slow rotating asteroid and the parent body of the Henan family in the central regions of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 20 December 1965, by astronomers at the Purple Mountain Observatory in Nanking, China. The asteroid was named for the Henan Province in China.

2085 Henan
Discovery
Discovered byPurple Mountain Obs.
Discovery sitePurple Mountain Obs.
Discovery date20 December 1965
Designations
MPC designation
(2085) Henan
Named after
Henan (Province of China)
Alternative designations
1965 YA · 1933 RE
1938 WR · 1949 FL
1949 FP1 · 1962 CL
1963 KA · 1969 VA1
1971 BG1 · 1972 LX
1973 QX1 · 1976 GR7
Minor planet category
main-belt · (outer)
Henan
Orbital characteristics
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc68.61 yr (25,060 days)
Aphelion2.9312 AU
Perihelion2.4654 AU
Semi-major axis
2.6983 AU
Eccentricity0.0863
Orbital period (sidereal)
4.43 yr (1,619 days)
Mean anomaly
276.34°
Mean motion
0° 13m 20.64s / day
Inclination3.8343°
Longitude of ascending node
118.14°
294.54°
Physical characteristics
Dimensions13.356±0.036 km
13.67 km (calculated)
13.941±0.082 km
16.56±4.50 km
17.61±0.32 km
18 km:23
18.34±1.20 km
Synodic rotation period
24 h
110±1 h
0.10±0.08
0.131±0.019
0.145±0.020
0.18 (assumed)
0.2510±0.0408
SMASS = L
L (Bus–DeMeo)
11.40 · 11.55±0.48 · 11.60 · 11.8 · 11.9 · 12.12
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