12359 Cajigal
| Discovery | |
|---|---|
| Discovered by | O. A. Naranjo |
| Discovery site | Llano del Hato – Mérida |
| Discovery date | 22 September 1993 |
| Designations | |
| MPC designation | 12359 Cajigal |
|
Named after
|
Juan Manuel Cajigal y Odoardo (mathematician, engineer, and statesman) |
|
1993 SN3 · 1976 UU2 1998 QB9 |
|
| main-belt · Themis | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 40.04 yr (14,625 days) |
| Aphelion | 3.6982 AU |
| Perihelion | 2.7028 AU |
| 3.2005 AU | |
| Eccentricity | 0.1555 |
| 5.73 yr (2,091 days) | |
| 19.317° | |
| 0° 10m 19.56s / day | |
| Inclination | 0.9455° |
| 175.04° | |
| 223.84° | |
| Physical characteristics | |
| Dimensions | 10.49 km (calculated) 11.69±2.68 km 13.052±0.197 km |
| 11.7664±0.0038 h | |
| 0.08 (assumed) 0.0945±0.0224 0.095±0.022 0.098±0.064 |
|
| C | |
| 12.9 · 13.10±0.41 · 12.805±0.003 · 12.6 · 13.25 · 12.80 | |
12359 Cajigal, provisional designation 1993 SN3, is a carbonaceous Themistian asteroid from the outer region of the asteroid belt, approximately 12 kilometers in diameter. It was discovered on 22 September 1993, by Venezuelan astronomer Orlando Naranjo at the Llano del Hato National Astronomical Observatory, Mérida, located in the Venezuelan Andes.
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 2.7–3.7 AU once every 5 years and 9 months (2,091 days). Its orbit has an eccentricity of 0.16 and an inclination of 1° with respect to the ecliptic. The first precovery was taken at Steward Observatory (Kitt Peak–Spacewatch) in 1991, extending the asteroid's observation arc by 2 years prior to its discovery. The first unused observation at Crimea-Nauchnij dates back to 1976.
In 2010, a photometric light-curve analysis at the U.S. Palomar Transient Factory, California, rendered a rotation period of 11.7664±0.0038 hours with a brightness amplitude of 0.27 in magnitude (U=2). According to the surveys carried out by NASA's Wide-field Infrared Survey Explorer and its subsequent NEOWISE mission, the asteroid's diameter measures 13.1 and 11.7 kilometers, and its surface has an albedo of 0.095 and 0.098, respectively. The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.08 and calculates a diameter of 10.5 kilometers.
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