1583 Antilochus
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| Discovery and designation | |
|---|---|
| Discovered by | Sylvain Julien Victor Arend |
| Discovery date | September 19, 1950 |
| Designations | |
| Named after | Antilochus |
| Alternative names | 1950 SA |
| Minor planet category | Jupiter Trojan |
| Orbital characteristics | |
| Epoch February 4, 2008 (JD 2454500.5) | |
| Aphelion | 804.661 Gm (5.379 AU) |
| Perihelion | 724.079 Gm (4.840 AU) |
| Semi-major axis | 764.370 Gm (5.109 AU) |
| Eccentricity | 0.053 |
| Orbital period | 4218.575 d(11.55 a) |
| Average orbital speed | 13.17 km/s |
| Mean anomaly | 303.165° |
| Inclination | 28.551° |
| Longitude of ascending node | 221.372° |
| Physical characteristics | |
| Dimensions | 101.6 km |
| Mass | 1.1×1018 kg |
| Mean density | 2.0 g/cm³ |
| Equatorial surface gravity | 0.0284 m/s² |
| Equatorial escape velocity | 0.0537 km/s |
| Sidereal rotation period | ? d |
| Axial tilt | ?° |
| Pole ecliptic latitude | ? |
| Pole ecliptic longitude | ? |
| Geometric albedo | 0.10 |
| Temperature | ~123 K |
| Spectral type | D |
| Absolute magnitude (H) | 8.60 |
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1583 Antilochus is a Jupiter Trojan asteroid that orbits in the L4 Lagrangian point of the Sun-Jupiter system, in the "Greek Camp" of Trojan asteroids. It was named after the Greek hero Antilochus. It was discovered by Sylvain Julien Victor Arend on September 19, 1950 in Uccle, Belgium.
External links
- Discovery Circumstances: Numbered Minor Planets
- Orbital simulation from JPL (Java) / Ephemeris
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