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145 Adeona
From Wikipedia, the free encyclopedia
| Discovery[1] and Designation | |
|---|---|
| Discovered by: | Christian Heinrich Friedrich Peters |
| Discovery date: | June 3, 1875 |
| Alternative names: [2] | |
| Minor planet category: | Main belt |
| Orbital characteristics[3] | |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion distance: | 457.677 Gm (3.059 AU) |
| Perihelion distance: | 341.958 Gm (2.286 AU) |
| Semi-major axis: | 399.817 Gm (2.673 AU) |
| Eccentricity: | 0.145 |
| Orbital period: | 1595.888 d (4.37 a) |
| Avg. orbital speed: | 18.12 km/s |
| Mean anomaly: | 163.291° |
| Inclination: | 12.637° |
| Longitude of ascending node: | 77.454° |
| Argument of perihelion: | 44.899° |
| Physical characteristics | |
| Dimensions: | 151.1 km |
| Mass: | 3.6×1018 kg |
| Mean density: | 2.0 g/cm³ |
| Equatorial surface gravity: | 0.0422 m/s² |
| Equatorial Escape velocity: | 0.0799 km/s |
| Sidereal rotation period: | ? d |
| Axial tilt: | ?° |
| Pole ecliptic latitude: | ? |
| Pole ecliptic longitude: | ? |
| Geometric albedo: | 0.10 |
| Temperature: | ~170 K |
| Spectral type: | C |
| Absolute magnitude: | 8.13 |
145 Adeona is a rather large Main belt asteroid. Its surface is very dark, and composition likely of primitive carbonaceous material.
The Adeona family of asteroids is named after it.
It was discovered by C. H. F. Peters on June 3, 1875 in Clinton, New York and named after Adeona, a protector of children in Roman mythology.
Adeona has been seen occulting a star once (July 9, 2002).
| Minor planets | ||
|---|---|---|
| Previous minor planet | 145 Adeona | 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.