59 Elpis
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| Discovery | |
|---|---|
| Discovered by: | Jean Chacornac |
| Discovery date: | September 12, 1860 |
| Alternative names: | |
| Minor planet category: | Main belt |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion distance: | 453.624 Gm (3.032 AU) |
| Perihelion distance: | 358.808 Gm (2.398 AU) |
| Semi-major axis: | 406.216 Gm (2.715 AU) |
| Eccentricity: | 0.117 |
| Orbital period: | 1634.355 d (4.47 a) |
| Avg. orbital speed: | 18.01 km/s |
| Mean anomaly: | 246.848° |
| Inclination: | 8.631° |
| Longitude of ascending node: | 170.209° |
| Argument of perihelion: | 210.901° |
| Physical characteristics | |
| Dimensions: | 164.8 km |
| Mass: | 4.7×1018 kg |
| Mean density: | ? g/cm³ |
| Equatorial surface gravity: | 0.0461 m/s² |
| Escape velocity: | 0.0871 km/s |
| Rotation period: | ? d |
| Albedo: | 0.044 [1] |
| Temperature: | ~169 K |
| Spectral type: | C |
| Absolute magnitude: | 7.93 |
59 Elpis (el'-pis) is a very large main belt asteroid. Being a C-type asteroid it is very dark and carbonaceous. Elpis was discovered by J. Chacornac on September 12, 1860. It was his sixth and final asteroid discovery. It is named after Elpis, a personification of hope in Greek mythology.
[edit] Aspects
[edit] References
| Minor planets | ||
|---|---|---|
| Previous minor planet | 59 Elpis | Next minor planet |
| List of asteroids | ||
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.
