_Alcock.png) Shape model ofAlcock from itslightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 26 October 1984 |
| Designations | |
| (3174) Alcock | |
Named after | George Alcock (amateur astronomer)[2] |
| 1984 UV · 1962 YD 1969 BB · 1973 YO1 1975 EO3 · 1978 RB1 1978 TJ3 · 1979 YR8 1980 AH · 1981 GF | |
| main-belt · Themis[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 47.71 yr (17,426 days) |
| Aphelion | 3.6932AU |
| Perihelion | 2.5991 AU |
| 3.1462 AU | |
| Eccentricity | 0.1739 |
| 5.58yr (2,038 days) | |
| 296.20° | |
| 0° 10m 35.76s / day | |
| Inclination | 2.3715° |
| 72.244° | |
| 4.6082° | |
| Physical characteristics | |
| 18.66±0.80 km[4] 18.71 km(calculated)[3] | |
| 7.05±0.01 h[5] | |
| 0.08(assumed)[3] 0.102±0.009[4] | |
| C(assumed)[3] | |
| 12.0[1][3] · 11.80[4] | |
3174 Alcock (prov. designation:1984 UV) is a carbonaceousThemistian asteroid from the outer region of theasteroid belt. It was discovered by American astronomerEdward Bowell at Lowell's U.S.Anderson Mesa Station in Flagstaff, Arizona, on 26 October 1984.[6] The likelyC-type asteroid has arotation period of 7.1 hours and measures approximately 19 kilometers (12 miles) in diameter. It was named after British amateur astronomerGeorge Alcock (1912–2000).
The darkC-type asteroid is a member of theThemis family, a dynamical family of outer-belt asteroids with nearly coplanarecliptical orbits. It orbits the Sun in theouter main-belt at a distance of 2.6–3.7 AU once every 5 years and 7 months (2,038 days). Its orbit has aneccentricity of 0.17 and aninclination of 2° with respect to theecliptic.[1] The first used observation was taken atCrimea–Nauchnij in 1973, when the body was identified as1973 YO1, extending itsobservation arc by 11 years prior to the official discovery observation. However, the first images were already taken at the U.S.Goethe Link Observatory in 1962, while it was identified as1962 YD.[6]
Thisminor planet was named by the discoverer for prolific British amateur astronomerGeorge Alcock (1912–2000), who visually discovered 5comets and 4novae.[2] Thenaming was published by theMinor Planet Center on 5 November 1987 (M.P.C. 12458).[7]
A rotationallightcurve of this asteroid was obtained from photometric observations made by French astronomer René Roy in February 2008. The lightcurve gave arotation period of7.05±0.01 hours with a brightness variation of 0.65 inmagnitude (U=3-).[5]
According to the spaced-based survey carried out by the JapaneseAkari satellite, the asteroid measures 18.66 kilometers in diameter and its surface has analbedo of 0.102,[4] while theCollaborative Asteroid Lightcurve Link assumes an albedo of 0.08 and calculates a diameter of 18.71 kilometers.[3]
