12564 Ikeller
| Discovery [1] | |
|---|---|
| Discovered by | W. Bickel |
| Discovery site | Bergisch Gladbach Obs. |
| Discovery date | 22 September 1998 |
| Designations | |
| MPC designation | 12564 Ikeller |
|
Named after
|
Ingeborg Bickel–Keller (discoverer's wife)[2] |
| 1998 SO49 · 1988 RA7 1991 EG5 · 1993 SK13 |
|
| main-belt · Koronis [3] | |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 26.84 yr (9,802 days) |
| Aphelion | 2.9406 AU |
| Perihelion | 2.7273 AU |
| 2.8339 AU | |
| Eccentricity | 0.0376 |
| 4.77 yr (1,743 days) | |
| 344.61° | |
| Inclination | 1.6199° |
| 180.04° | |
| 117.73° | |
| Physical characteristics | |
| Dimensions | 5.369±0.259 km[4] 5.17 km (calculated)[3] |
| 7.0423±0.0196 h (S)[5] 7.0321±0.0196 h (R)[5] |
|
| 0.2225±0.0495[4] 0.24 (assumed)[3] |
|
| S [3] | |
| 13.6[1][3][4] 14.282±0.007 (S)[5] 13.644±0.003 (R)[5] 14.16±0.23[6] |
|
12564 Ikeller, provisional designation 1998 SO49, is a stony Koronis asteroid from the outer region of the asteroid belt, approximately 5 kilometers in diameter. It was discovered by German amateur astronomer Wolf Bickel at his private Bergisch Gladbach Observatory on 22 September 1998.[2]
The S-type asteroid is a member of the Koronis family, which is named after 158 Koronis and consists of about 300 known bodies. It orbits the Sun at a distance of 2.7–2.9 AU once every 4 years and 9 months (1,743 days). Its orbit has an eccentricity of 0.04 and a typically low inclination of 2° with respect to the ecliptic.[1] The first precovery was obtained at ESO's La Silla Observatory in 1988, extending the asteroid's observation arc by 10 years prior to its discovery.[2]
According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, the asteroid measures 5.4 kilometers in diameter and its surface has an albedo of 0.22,[4] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 and thus calculates a smaller diameter of 5.2 kilometers, as the higher the albedo (reflectivity), the smaller the body's diameter at a constant absolute magnitude (brightness).[3] In August 2012, a photometric light-curve analysis at the U.S. Palomar Transient Factory, California, rendered a rotation period of 7.0423±0.0196 hours with a brightness amplitude of 0.44 in magnitude (U=2).[5]
The minor planet was named by the discoverer after his wife, Ingeborg Bickel–Keller (b. 1941).[2] Naming citation was published on 16 January 2014 (M.P.C. 86713).[7]
References
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- ↑ 2.0 2.1 2.2 2.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 4.2 4.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 5.2 5.3 5.4 Lua error in package.lua at line 80: module 'strict' not found.
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External links
- Koronis Family Asteroids Rotation Lightcurve Observing Program, Stephen M. Slivan, 2013
- 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 (10001)-(15000) – Minor Planet Center
- 12564 Ikeller at the JPL Small-Body Database
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