124 Alkeste
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| Discovery | |
|---|---|
| Discovered by: | Christian Heinrich Friedrich Peters |
| Discovery date: | August 23, 1872 |
| Alternative names: | |
| Minor planet category: | Main belt |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion distance: | 423.558 Gm (2.831 AU) |
| Perihelion distance: | 363.297 Gm (2.428 AU) |
| Semi-major axis: | 393.427 Gm (2.630 AU) |
| Eccentricity: | 0.077 |
| Orbital period: | 1557.784 d (4.26 a) |
| Avg. orbital speed: | 18.34 km/s |
| Mean anomaly: | 253.158° |
| Inclination: | 2.951° |
| Longitude of ascending node: | 188.184° |
| Argument of perihelion: | 63.214° |
| Physical characteristics | |
| Dimensions: | 76.4 km |
| Mass: | 4.7×1017 kg |
| Mean density: | ? g/cm³ |
| Equatorial surface gravity: | 0.0214 m/s² |
| Escape velocity: | 0.0404 km/s |
| Rotation period: | ? d |
| Albedo: | ? |
| Temperature: | ~172 K |
| Spectral type: | S |
| Absolute magnitude: | 8.11 |
124 Alkeste is a large Main belt asteroid. It is an S-type. C.H.F. Peters discovered the asteroid on August 23, 1872, and named it after Alcestis, a woman in Greek mythology. Only one stellar occultation by Alkeste has been observed. It passed over the third magnitude star Beta Virginis on June 24, 2003. The event was observed from Australia and New Zealand.
| Minor planets | ||
|---|---|---|
| Previous minor planet | 124 Alkeste | 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.
