1583 Antilochus
From Infogalactic: the planetary knowledge core
| Discovery[1] | |
|---|---|
| Discovered by | Sylvain Julien Victor Arend |
| Discovery date | 19 September 1950 |
| Designations | |
|
Named after
|
Antilochus |
| 1950 SA | |
| Jupiter Trojan | |
| Orbital characteristics[1][2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 32616 days (89.30 yr) |
| Aphelion | 5.39305 AU (806.789 Gm) |
| Perihelion | 4.86165 AU (727.292 Gm) |
| 5.12735 AU (767.041 Gm) | |
| Eccentricity | 0.051820 |
| 11.61 yr (4240.70 d) | |
|
Average orbital speed
|
13.17 km/s |
| 188.174° | |
| Inclination | 28.5209° |
| 221.392° | |
| 188.077° | |
| Earth MOID | 3.87099 AU (579.092 Gm) |
| Jupiter MOID | 0.0324682 AU (4.85717 Gm) |
| Physical characteristics | |
| Dimensions | 101.6 km |
|
Mean radius
|
50.81 ± 1.6 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 |
| 31.52 h (1.313 d) | |
|
Sidereal rotation period
|
? d |
| ?° | |
|
Pole ecliptic latitude
|
? |
|
Pole ecliptic longitude
|
? |
| 0.0633 ± 0.004 | |
| Temperature | ~123 K |
| D | |
| 8.60 | |
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.
References
External links
- Discovery Circumstances: Numbered Minor Planets
- Orbital simulation from JPL (Java) / Ephemeris
