Discovery [1] | |
---|---|
Discovered by | E. Bowell |
Discovery site | Lowell Obs. |
Discovery date | 2 December 1981 |
Designations | |
(4276) Clifford | |
Named after | Clifford Cunningham (Canadian astronomer)[2] |
1981 XA | |
Mars-crosser [1][3] · main belt | |
Orbital characteristics [1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 35.67 yr (13,027 days) |
Aphelion | 2.4195 AU |
Perihelion | 1.5994 AU |
2.0095 AU | |
Eccentricity | 0.2041 |
2.85 yr (1,040 days) | |
186.63° | |
0° 20m 45.6s / day | |
Inclination | 21.033° |
76.881° | |
3.5494° | |
Physical characteristics | |
Dimensions | 4.441±1.128 km[4] |
0.142±0.107[4] | |
SMASS = Cb [1] | |
14.6[1] | |
4276 Clifford, provisional designation1981 XA is an asteroid and sizable Mars-crosser from the innermost region of the asteroid belt, approximately 4.4 kilometers in diameter. It was discovered on 2 December 1981, by American astronomers Edward Bowell at Lowell Observatory in Flagstaff, United States. The asteroid was named in honor of astronomer and writer Clifford Cunningham.[3]
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