4451 Grieve
From Wikipedia, the free encyclopedia
| Discovery[1] | |
|---|---|
| Discovered by | C. Shoemaker |
| Discovery site | Palomar Obs. |
| Discovery date | 9 May 1988 |
| Designations | |
| (4451) Grieve | |
Named after | Richard Grieve[1] (Canadian geologist) |
| 1988 JJ · 1971 GF 1980 VE1 | |
| Mars-crosser[1][2] | |
| Orbital characteristics[3] | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 63.12 yr (23,053 d) |
| Aphelion | 3.6024 AU |
| Perihelion | 1.6064 AU |
| 2.6044 AU | |
| Eccentricity | 0.3832 |
| 4.20 yr (1,535 d) | |
| 348.28° | |
| 0° 14m 4.2s / day | |
| Inclination | 27.799° |
| 219.38° | |
| 110.23° | |
| Mars MOID | 0.4477 AU |
| Physical characteristics | |
| 12.16±2.43 km[4] | |
| 6.864±0.006 h[5] | |
| 0.189[4] | |
| SMASS = S[3][2] Svw (Bus–DeMeo)[6] | |
| 12.00[1][3][2][4] | |
4451 Grieve, provisional designation 1988 JJ, is a stony asteroid and large Mars-crosser on an eccentric orbit from the central asteroid belt, approximately 12 kilometers (7.5 miles) in diameter. It was discovered on 9 May 1988, by American astronomer Carolyn Shoemaker at the Palomar Observatory in California.[1] The S-type asteroid is likely elongated and has a rotation period of 6.9 hours.[2] It was named for Canadian geologist Richard Grieve.[1]
Grieve is a Mars-crossing asteroid, crossing the orbit of Mars at 1.666 AU. Members of this dynamically unstable group are located between the main belt and near-Earth populations. It orbits the Sun at a distance of 1.6–3.6 AU once every 4 years and 2 months (1,535 days; semi-major axis of 2.6 AU). Its orbit has an eccentricity of 0.38 and an inclination of 28° with respect to the ecliptic.[3] The body's observation arc begins with a precovery taken at Palomar in 1954, or 34 years prior to its official discovery observation.[1]
Physical characteristics
In the SMASS classification, Grieve is a common, stony S-type asteroid.[3] In the Bus-DeMeo taxonomy it is a Svw-type.[6]
