2012 Guo Shou-Jing
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| Discovery[1] | |
|---|---|
| Discovered by | Purple Mountain Obs. |
| Discovery site | Purple Mountain Obs. |
| Discovery date | 9 October 1964 |
| Designations | |
| (2012) Guo Shou-Jing | |
Named after | Guo Shoujing (Chinese astronomer)[2] |
| 1964 TE2 · 1971 SF1 1974 MS | |
| main-belt · Flora[3] · Interloper | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 63.80 yr (23,303 days) |
| Aphelion | 2.7436 AU |
| Perihelion | 1.9137 AU |
| 2.3286 AU | |
| Eccentricity | 0.1782 |
| 3.55 yr (1,298 days) | |
| 6.7252° | |
| 0° 16m 38.64s / day | |
| Inclination | 2.9066° |
| 277.11° | |
| 36.696° | |
| Physical characteristics | |
| Dimensions | 5.67 km (calculated)[3] 11.65±0.26 km[4] 11.931±0.080 km[5] 12.248±0.035 km[6] 12.82±3.11 km[7] 14.46±4.71 km[8] 14.70±4.42 km[9] |
| 12 h[10] | |
| 0.030±0.006[6] 0.035±0.041[8] 0.04±0.04[9] 0.04±0.03[7] 0.0486±0.0016[5] 0.070±0.004[4] 0.24 (assumed)[3] | |
| C[11] · S[3] | |
| 13.20[4][5] · 13.30[9] · 13.4[1][3] · 13.46[8] · 13.51±0.22[11] · 13.56[7] | |
2012 Guo Shou-Jing, provisional designation 1964 TE2, is a carbonaceous asteroid and Florian interloper from the inner regions of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 9 October 1964, by astronomers at the Purple Mountain Observatory in Nanking, China.[12] The asteroid was named after Chinese astronomer Guo Shoujing.[2]
Florian interloper
Guo Shou-Jing orbits the Sun at a distance of 1.9–2.7 AU once every 3 years and 7 months (1,298 days). Its orbit has an eccentricity of 0.18 and an inclination of 3° with respect to the ecliptic.[1] The body's observation arc begins 11 years prior to its official discovery observation, with a precovery taken at Palomar Observatory in August 1953.[12]
Guo Shou-Jing is a dark, carbonaceous asteroid but possesses the orbital characteristics of a member of the Flora family, which is one of the largest groups of bright, stony S-type asteroids in the main-belt. It is therefore thought to be an unrelated interloper that does not origin from the Flora family's parent body.
