| Discovery | |
|---|---|
| Discovered by: | H. Goldschmidt |
| Discovery date: | March 31, 1856 |
| Orbital characteristics | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 355.021 Gm (2.373 AU) |
| Perihelion: | 323.537 Gm (2.163 AU) |
| Semi-major axis: | 339.279 Gm (2.268 AU) |
| Eccentricity: | 0.046 |
| Orbital period: | 1247.514 d (3.42 a) |
| Avg. orbital speed: | 19.77 km/s |
| Mean anomaly: | 249.120° |
| Inclination: | 4.256° |
| Longitude of ascending node: | 94.287° |
| Argument of perihelion: | 268.988° |
| Physical characteristics | |
| Dimensions: | 107.6 km |
| Mass: | ~1.3×1018 kg |
| Mean density: | 2.0? g/cm³ |
| Equatorial surface gravity: | ~0.0301 m/s² |
| Escape velocity: | ~0.0569 km/s |
| Rotation period: | 0.371 d (8.91 h) [1] |
| Albedo: | 0.242 (geometric)[2] |
| Temperature: | ~177 K |
| Spectral type: | S |
| Apparent magnitude: | 9.31 (brightest) |
| Absolute magnitude: | 7.0 |
40 Harmonia (IPA: /harˈmoʊniə/) is a large main belt asteroid. It was discovered by H. Goldschmidt on March 31, 1856 and named after Harmonia, the Greek goddess of harmony. The name was chosen to mark the end of the Crimean War.
References
External links
- Orbital simulation from JPL (Java) / Ephemeris
| Minor planets (see full list) |
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| Previous minor planet | 40 Harmonia | Next minor planet |
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| Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Neptune Trojans · Comets · Trans-Neptunians (Kuiper belt • Scattered disc objects • Oort cloud) |
| For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons, meteoroids and the Solar System. For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names. |
