8405 Asbolus
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 Artist's impression of 8405 Asbolus |
|
| Discovery | |
|---|---|
| Discovered by: | J. V. Scotti and R. Jedicke |
| Discovery date: | April 5, 1995 |
| Alternative names: | 1995 GO |
| Minor planet category: | centaur |
| Orbital characteristics | |
| Aphelion distance: | 29.115 AU |
| Perihelion distance: | 6.833 AU |
| Semi-major axis: | 17.974 AU |
| Eccentricity: | 0.620 |
| Avg. orbital speed: | ? |
| Mean anomaly: | 22.1 |
| Inclination: | 17.6 |
| Longitude of ascending node: | 6.0 |
| Argument of perihelion: | 290.3 |
| Physical characteristics | |
| Dimensions: | 72 km[1] |
| Mass: | ? |
| Mean density: | ? |
| Equatorial surface gravity: | ? |
| Escape velocity: | ? |
| Rotation period: | ? |
| Albedo: | 0.12 =/-0.03 |
| Spectral type: | ? |
| Absolute magnitude: | 9.0[2] |
8405 Asbolus is a Centaur, that is, an icy asteroid that orbits between Jupiter and Neptune. It was discovered by James V. Scotti and Robert Jedicke of Spacewatch at Kitt Peak Observatory on April 5, 1995. It is named after Asbolus (Greek for sooty), a centaur in Greek mythology. Its provisional designation was 1995 GO.
Asbolus is believed to be 66±4 km in diameter.[3] No resolved images of it have ever been made but, in 1998, spectral analysis of its composition by the Hubble Space Telescope revealed a fresh impact crater on its surface, less than 10 million years old. Centaurs are dark in colour, because their icy surfaces have darkened after long exposure to solar radiation and the solar wind. However, fresh craters excavate brighter, more reflective ice from below the surface, and that is what Hubble has detected on Asbolus.
[edit] References
- ^ http://www.johnstonsarchive.net/astro/tnoslist.html
- ^ http://cfa-www.harvard.edu/iau/lists/Centaurs.html
- ^ http://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2002AJ....123.1050F&db_key=AST&high=3d6ea7529520107
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.
