2148 Epeios
| Discovery | |
|---|---|
| Discovered by | Richard Martin West |
| Discovery date | 24 October 1976 |
| Designations | |
Named after | Epeius |
| 1976 UW | |
| Jupiter Trojan | |
| Orbital characteristics[1][2] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 14360 days (39.32 yr) |
| Aphelion | 5.51004 AU (824.290 Gm) |
| Perihelion | 4.91823 AU (735.757 Gm) |
| 5.21414 AU (780.024 Gm) | |
| Eccentricity | 0.056750 |
| 11.91 yr (4348.83 d) | |
Average orbital speed | 13.04 km/s |
| 176.555° | |
| 0° 4m 58.011s / day | |
| Inclination | 9.14888° |
| 176.595° | |
| 232.223° | |
| Earth MOID | 3.9355 AU (588.74 Gm) |
| Jupiter MOID | 0.0331334 AU (4.95669 Gm) |
| Jupiter Tisserand parameter | 2.971 |
| Physical characteristics | |
| Dimensions | ? km |
| Mass | ?×10? kg |
Mean density | ? g/cm³ |
Equatorial surface gravity | ? m/s² |
Equatorial escape velocity | ? km/s |
Sidereal rotation period | ? d |
| ?° | |
Pole ecliptic latitude | ? |
Pole ecliptic longitude | ? |
| 0.10 | |
| Temperature | ~122 K |
| ? | |
| 10.8 | |
|
| |
2148 Epeios 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 Epeius, who was a soldier during the Trojan War. It was discovered by Richard Martin West on October 24, 1976 at the La Silla Observatory in Chile. 2146 Stentor was also discovered the same day by West.
References
- ↑ "The Asteroid Orbital Elements Database". astorb. Lowell Observatory.
- ↑ "2148 Epeios (1976 UW)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 April 2016.
External links
- Discovery Circumstances: Numbered Minor Planets
- Orbital simulation from JPL (Java) / Ephemeris
- 2148 Epeios at the JPL Small-Body Database
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