(7352) 1994 CO
| Discovery | |
|---|---|
| Discovered by |
S. Ueda H. Kaneda |
| Discovery site | Kushiro Obs. (399) |
| Discovery date | 4 February 1994 |
| Designations | |
| MPC designation | (7352) 1994 CO |
| 1994 CO · 1991 VD3 | |
|
Jupiter trojan (Trojan camp) |
|
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 28.24 yr (10,313 days) |
| Aphelion | 5.3237 AU |
| Perihelion | 4.9457 AU |
| 5.1347 AU | |
| Eccentricity | 0.0368 |
| 11.64 yr (4,250 days) | |
| 224.35° | |
| 0° 5m 4.92s / day | |
| Inclination | 8.1799° |
| 130.32° | |
| 125.16° | |
| Jupiter MOID | 0.0287 AU |
| Jupiter Tisserand parameter | 2.9790 |
| Physical characteristics | |
| Dimensions |
47.07±2.06 km 47.73±0.79 km 47.731±0.789 km 58.29 km (calculated) |
| 648±3 h | |
| 0.057 (assumed) 0.093±0.023 0.207±0.020 |
|
| C | |
| 9.00 · 9.8 · 9.9 | |
(7352) 1994 CO is an exceptionally slow rotating carbonaceous Jupiter trojan from the Trojan camp, approximately 48 kilometers in diameter. It was discovered on 4 February 1994, by Japanese astronomers Seiji Ueda and Hiroshi Kaneda at Kushiro Observatory in Kushiro, Japan.
The dark C-type Jovian asteroid resides in Jupiter's L5 Lagrangian point (Trojan camp), which lies 60° behind the gas giant's orbit. It orbits the Sun at a distance of 4.9–5.3 AU once every 11 years and 8 months (4,250 days). Its orbit has an eccentricity of 0.04 and an inclination of 8° with respect to the ecliptic. The first precovery was taken at Palomar Observatory in 1988, extending the body's observation arc by 6 years prior to its discovery.
In October 2013, a rotational light-curve was obtained for this asteroid from photometric observations by American amateur astronomer Robert D. Stephens at the CS3–Trojan Station (U81) in Landers, California. It gave a well-defined, outstandingly long rotation period of 648±3 hours with a brightness variation of 0.30 magnitude (U=3-). As of 2016, there are only about two dozens exceptionally slowly rotating objects known with periods longer than 600 hours.
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