119 Althaea
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This article is about the asteroid 119 Althaea. For other uses, see Althaea (disambiguation).
| Discovery | |
|---|---|
| Discovered by: | James Craig Watson |
| Discovery date: | April 3, 1872 |
| Alternative names: | |
| Minor planet category: | Main belt |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion distance: | 417.511 Gm (2.791 AU) |
| Perihelion distance: | 354.870 Gm (2.372 AU) |
| Semi-major axis: | 386.190 Gm (2.582 AU) |
| Eccentricity: | 0.081 |
| Orbital period: | 1515.000 d (4.15 a) |
| Avg. orbital speed: | 18.51 km/s |
| Mean anomaly: | 1.847° |
| Inclination: | 5.778° |
| Longitude of ascending node: | 203.738° |
| Argument of perihelion: | 171.282° |
| Physical characteristics | |
| Dimensions: | 57.3 km |
| Mass: | 2.0×1017 kg |
| Mean density: | ? g/cm³ |
| Equatorial surface gravity: | 0.0160 m/s² |
| Escape velocity: | 0.0303 km/s |
| Rotation period: | ? d |
| Albedo: | ? |
| Temperature: | ~173 K |
| Spectral type: | S |
| Absolute magnitude: | 8.42 |
119 Althaea is a sizable main belt asteroid. It is an S-type asteroid. It was discovered by J. C. Watson on April 3, 1872 and named after Althaea, the mother of Meleager in Greek mythology. Two occultations by Althaea were observed in 2002, only a month apart.
| Minor planets | ||
|---|---|---|
| Previous minor planet | 119 Althaea | 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.
