4007 Euryalos
4007 Euryalos /jʊˈraɪələs/ is a larger Jupiter trojan from the Greek camp, approximately 48 kilometers (30 miles) in diameter. It was discovered on 19 September 1973, by Dutch astronomers Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at Palomar Observatory in California. The likely spherical Jovian asteroid is the principal body of the proposed Euryalos family and has a rotation period of 6.4 hours. It was named after the warrior Euryalus from Greek mythology.
| Discovery | |
|---|---|
| Discovered by | C. J. van Houten I. van Houten-G. T. Gehrels |
| Discovery site | Palomar Obs. |
| Discovery date | 19 September 1973 |
| Designations | |
MPC designation | (4007) Euryalos |
| Pronunciation | /jʊˈraɪələs/ |
Named after | Euryalus (Greek mythology) |
Alternative designations | 1973 SR · 1977 AK2 1986 VH5 · 1989 AR1 |
Minor planet category | Jupiter trojan Greek · background |
| Orbital characteristics | |
| Epoch 23 March 2018 (JD 2458200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 44.68 yr (16,319 d) |
| Aphelion | 5.4636 AU |
| Perihelion | 4.8879 AU |
Semi-major axis | 5.1758 AU |
| Eccentricity | 0.0556 |
Orbital period (sidereal) | 11.78 yr (4,301 d) |
Mean anomaly | 213.56° |
Mean motion | 0° 5m 1.32s / day |
| Inclination | 11.002° |
Longitude of ascending node | 6.7476° |
| 77.957° | |
| Jupiter MOID | 0.1658 AU |
| TJupiter | 2.9600 |
| Physical characteristics | |
Mean diameter | 45.52±0.35 km 48.48 km (calculated) 53.89±3.94 km |
Synodic rotation period | 6.391±0.005 h |
| 0.057 (assumed) 0.061±0.009 0.065±0.017 | |
| C (assumed) | |
| 10.00 10.3 | |
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