4151 Alanhale
| Discovery [1] | |
|---|---|
| Discovered by | C. S. Shoemaker E. M. Shoemaker |
| Discovery site | Palomar Obs. |
| Discovery date | 24 April 1985 |
| Designations | |
| MPC designation | 4151 Alanhale |
|
Named after
|
Alan Hale (astronomer)[2] |
| 1985 HV1 · 1968 HD 1976 SO1 · 1979 FX1 1982 SZ4 · 1985 JX |
|
| main-belt · Themis [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 47.54 yr (17,365 days) |
| Aphelion | 3.5933 AU |
| Perihelion | 2.7028 AU |
| 3.1481 AU | |
| Eccentricity | 0.1414 |
| 5.59 yr (2,040 days) | |
| 205.51° | |
| Inclination | 1.0080° |
| 67.048° | |
| 74.839° | |
| Physical characteristics | |
| Dimensions | 15.37 km (calculated)[3] |
| 11.9177 h[4] | |
| 0.08 (assumed)[3] | |
| C [3] | |
| 12.3[1] | |
| <templatestyles src="Reflist/styles.css" />
Cite error: Invalid <references />, or <references group="..." /> |
|
4151 Alanhale, provisional designation 1985 HV1, is a carbonaceous asteroid from the outer region of the asteroid belt, about 15 kilometers in diameter. It was discovered by the American astronomer couple Carolyn and Eugene Shoemaker at the U.S. Palomar Observatory, California, on 24 April 1985.[5]
The dark C-type asteroid is a member of the Themis family, a dynamical family of outer-belt asteroids with nearly coplanar ecliptical orbits. It orbits the Sun at a distance of 2.7–3.6 AU once every 5 years and 7 months (2,040 days). Its orbit shows an eccentricity of 0.14 and is tilted by 1 degree to the plane of the ecliptic. It has a rotation period of 11.9 hours[4] and an albedo of 0.08, assumed by the Collaborative Asteroid Lightcurve Link (CALL).
The minor planet was named in honor of American astronomer Alan Hale (b. 1958), co-discoverer of comet Hale–Bopp. His careful visual observations include more than 130 comets, several at more than one apparition, and both, magnitude estimates and confirmations of discoveries. He has also applied his magnitude estimating skill to asteroids, particularly the fast moving objects 1989 AC and 1989 VA, and has participated in asteroid occultation teams. He has done much to promote asteroid-comet education through articles on comets and emphasis on asteroids in his introductory astronomy classes.[2]
References
<templatestyles src="Reflist/styles.css" />
Cite error: Invalid <references> tag; parameter "group" is allowed only.
<references />, or <references group="..." />External links
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 4151 Alanhale at the JPL Small-Body Database
<templatestyles src="Asbox/styles.css"></templatestyles>
_mathilde.jpg){kind=small} |
This article about an asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it. |
- ↑ 1.0 1.1 1.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 3.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
