13123 Tyson
| Discovery | |
|---|---|
| Discovered by |
C. Shoemaker D. H. Levy |
| Discovery site | Palomar Obs. |
| Discovery date | 16 May 1994 |
| Designations | |
| MPC designation | 13123 Tyson |
|
Named after
|
Neil deGrasse Tyson (astrophysicist) |
| 1994 KA · 1995 YO2 | |
| main-belt · Phocaea | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 63.48 yr (23,186 days) |
| Aphelion | 2.9994 AU |
| Perihelion | 1.7202 AU |
| 2.3598 AU | |
| Eccentricity | 0.2710 |
| 3.63 yr (1,324 days) | |
| 24.245° | |
| 0° 16m 18.84s / day | |
| Inclination | 23.288° |
| 68.804° | |
| 252.04° | |
| Physical characteristics | |
| Dimensions | 8.22 km (calculated) 10.87±0.61 km |
|
3.329±0.001 h 3.3303±0.0002 h |
|
|
0.197±0.025 0.23 (assumed) |
|
| S | |
| 12.19±0.09 (R) · 12.20 · 12.3 · 12.41±0.41 · 12.64 | |
13123 Tyson, provisional designation 1994 KA, is a stony Phocaea asteroid and a possible binary system from the inner regions of the asteroid belt, approximately 10 kilometers in diameter. It was discovered by American astronomer Carolyn Shoemaker and Canadian astronomer David H. Levy at the U.S. Palomar Observatory, California, on 16 May 1994.
The stony S-type asteroid is a member of the Phocaea family, a rather small group of asteroids with similar orbital characteristics, named after its largest member, 25 Phocaea. It orbits orbits the Sun at a distance of 1.7–3.0 AU once every 3 years and 8 months (1,324 days). Its orbit has an eccentricity of 0.27 and an inclination of 23° with respect to the ecliptic. The first precovery was taken at Palomar's Digitized Sky Survey (DSS) in 1953, extending the asteroid's observation arc by 41 years prior to its discovery.
In February 2015, a rotational light-curve was obtained by astronomer Petr Pravec at the Astronomical Institute, Czech Republic. It showed a well-defined rotation period of 3.3303±0.0002 hours with a brightness amplitude of 0.20 in magnitude (U=3). A previous photometric observation in August 2009, at the Oakley Southern Sky Observatory, Australia, gave a light-curve with a similar period of 3.329±0.001 and a brightness variation of 0.35 in magnitude (U=3-).
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