(145) Adeona
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Asteroid (145) Adeona |
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| Properties of the orbit ( animation ) | |
| Orbit type | Middle main belt |
| Asteroid family | Adeona family |
| Major semi-axis | 2,673 AU |
| eccentricity | 0.145 |
| Perihelion - aphelion | 2.285 AU - 3.061 AU |
| Inclination of the orbit plane | 12.6 ° |
| Length of the ascending node | 77.4 ° |
| Argument of the periapsis | 44.6 ° |
| Time of passage of the perihelion | May 19, 2009 |
| Sidereal period | 4 a 135 d |
| Mean orbital velocity | 18.1 km / s |
| Physical Properties | |
| Medium diameter | 151.14 km |
| Albedo | 0.0433 |
| Rotation period | 15 h 5 min |
| Absolute brightness | 8.13 mag |
| Spectral class | C. |
| history | |
| Explorer | CHF Peters |
| Date of discovery | June 3, 1875 |
| Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. | |
(145) Adeona is an asteroid of the main asteroid belt , which was discovered on June 3, 1875 by Christian Heinrich Friedrich Peters . The asteroid is named after the Roman goddess Adeona .
Adeona ranges from 2.2904 ( perihelion ) astronomical units to 3.0561 astronomical units ( aphelion ) in 4.371 years around the sun . The orbit is inclined 12.6273 ° to the ecliptic , the orbital eccentricity is 0.1432. Adeona has a diameter of 151 km. It has a dark carbon-rich surface with an albedo of 0.043. It rotates on its own axis in 15,071 hours. Adeona's rotating light curve shows 4 maxima and 4 minima, which is very unusual.
If the Dawn spacecraft had left its orbit around (1) Ceres once more during a mission extension, then (145) Adeona would have been the likely destination for a close flyby. At the beginning of July 2016, NASA decided to continue the Dawn mission. However, a possible observation of Adeona has been canceled, instead the space probe remains in its orbit around Ceres.
See also
Web links
Individual evidence
- ↑ Pilcher, F. (2010): Rotation Period Determinations for 80 Sappho, 145 Adeona, 217 Eudora, 274 Philagoria, 567 Eleutheria, and 826 Henrika. Minor Planet Bulletin 37-4 , 148-149.
- ↑ (145) Adeona in the Small-Body Database of the Jet Propulsion Laboratory (English).
- ↑ NASA's New Horizons probe to visit mysterious object in outer solar system Article by Rachel Feltman in the Washington Post July 5, 2016, accessed July 8, 2016.