1173 Anchises
1173 Anchises /æŋˈkaɪsiːz/ is an unusually elongated Jupiter Trojan from the Trojan camp, approximately 124 kilometers (77 miles) in diameter. It was discovered on 17 October 1930, by German astronomer Karl Reinmuth at the Heidelberg Observatory in southwest Germany, and was the 9th such body to be discovered.: 2 The primitive P-type asteroid belongs to the largest Jupiter trojans, has an unusually smooth surface texture, the lowest spectral slope of all members of the Trojan camp, and a rotation period of 11.6 hours. It was named after Anchises from Greek mythology.
Shape model of Anchises from its lightcurve | |
| Discovery | |
|---|---|
| Discovered by | K. Reinmuth |
| Discovery site | Heidelberg Obs. |
| Discovery date | 17 October 1930 |
| Designations | |
MPC designation | (1173) Anchises |
| Pronunciation | /æŋˈkaɪsiːz/ |
Named after | Anchises (Greek mythology) |
Alternative designations | 1930 UB |
Minor planet category | Jupiter trojan Trojan · background |
| Adjectives | Anchisian |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 87.60 yr (31,997 d) |
| Aphelion | 6.0232 AU |
| Perihelion | 4.5678 AU |
Semi-major axis | 5.2955 AU |
| Eccentricity | 0.1374 |
Orbital period (sidereal) | 12.19 yr (4,451 d) |
Mean anomaly | 184.44° |
Mean motion | 0° 4m 51.24s / day |
| Inclination | 6.9202° |
Longitude of ascending node | 283.91° |
| 40.496° | |
| Jupiter MOID | 0.4727 AU |
| TJupiter | 2.9670 |
| Physical characteristics | |
| Dimensions | 170 km × 121 km × 121 km |
Mean diameter | 99.55±0.85 km 120.49±2.91 km 126.27±10.7 km 136±18 km |
Synodic rotation period | 11.595±0.002 h 11.596±0.005 h 11.60 h |
| 0.0308±0.006 0.035±0.002 0.050±0.009 | |
| P (Tholen) D (Barucci) U–B = 0.266±080 B–V = 0.770±0.050 V–R = 0.450±0.030 V–I = 0.950±0.026 | |
| 8.89 9.14±0.31 9.35 | |
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