405 Thia
| Discovery | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | July 23, 1895 |
| Designations | |
Named after | Theia |
| 1895 BZ | |
| Main belt | |
| Orbital characteristics | |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 3.216 AU |
| Perihelion | 1.953 AU |
| 2.584 AU | |
| Eccentricity | 0.244 |
| 1517.321 d (4.15 a) | |
Average orbital speed | 18.53 km/s |
| 210.706° | |
| Inclination | 11.949° |
| 255.303° | |
| 309.2° | |
| Physical characteristics | |
| Dimensions | 122.14 ± 7.69[1] km |
| Mass | (1.38 ± 0.14) × 1018[1] kg |
Mean density | 1.44 ± 0.30[1] g/cm3 |
Spectral type | C |
| 8.46 | |
|
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405 Thia is a very large main-belt asteroid. It is classified as a C-type asteroid and is probably composed of carbonaceous material. This object was discovered by Auguste Charlois on July 23, 1895, in Nice, and was named after Theia (sometimes written Thea or Thia), a Titaness in Greek mythology.[2]
In 2002, the asteroid was detected by radar from the Arecibo Observatory at a distance of 1.31 AU. The resulting data yielded an effective diameter of 125 ± 16 km.[3]
References
- 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
- ↑ Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names. Berlin, Heidelberg, New York: Springer. p. 48. ISBN 3-540-00238-3.
- ↑ Magri, Christopher; et al. (January 2007), "A radar survey of main-belt asteroids: Arecibo observations of 55 objects during 1999 2003" (PDF), Icarus 186 (1): 126–151, Bibcode:2007Icar..186..126M, doi:10.1016/j.icarus.2006.08.018, retrieved 2015-04-14.
External links
- 405 Thia at the JPL Small-Body Database
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