15262 Abderhalden
| Discovery | |
|---|---|
| Discovered by |
F. Börngen L. D. Schmadel |
| Discovery site | Tautenburg Obs. |
| Discovery date | 12 October 1990 |
| Designations | |
| MPC designation | (15262) Abderhalden |
|
Named after
|
Emil Abderhalden (physiologist) |
|
1990 TG4 · 1978 PJ3 1978 RM3 · 1999 FO42 |
|
| main-belt · Themis | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 37.81 yr (13,810 days) |
| Aphelion | 3.6743 AU |
| Perihelion | 2.7542 AU |
| 3.2142 AU | |
| Eccentricity | 0.1431 |
| 5.76 yr (2,105 days) | |
| 292.75° | |
| 0° 10m 15.6s / day | |
| Inclination | 0.6295° |
| 5.8516° | |
| 287.21° | |
| Physical characteristics | |
| Dimensions | 8.43 km (calculated) 12.201±0.545 km |
| 3.5327±0.0012 h | |
|
0.062±0.029 0.08 (assumed) |
|
| C | |
| 13.2 · 13.282±0.004 (R) · 13.3 · 13.43±0.23 · 13.73 | |
15262 Abderhalden, provisional designation 1990 TG4, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 12 kilometers in diameter. It was discovered by German astronomers Freimut Börngen and Lutz Schmadel at the Karl Schwarzschild Observatory in Tautenburg, eastern Germany, on 12 October 1990.
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 2.8–3.7 AU once every 5 years and 9 months (2,105 days). Its orbit has an eccentricity of 0.14 and an inclination of 1° with respect to the ecliptic. The first precovery was obtained at Crimea–Nauchnij in 1978, extending the asteroid's observation arc by 12 years prior to its discovery.
In October 2013, a rotational light-curve was obtained from photometric observation at the U.S. Palomar Transient Factory, California. The light-curve showed a rotation period of 3.5327±0.0012 hours with a brightness variation of 0.21 in magnitude (U=2). The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.08, a standard albedo for carbonaceous asteroids of this family, and calculates a diameter of 8.4 kilometers, while the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer finds an albedo of 0.062 with a corresponding diameter of 12.2 kilometers.
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