192 Nausikaa
|
A three-dimensional model of 192 Nausikaa based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | J. Palisa, 1879 |
| Designations | |
| Pronunciation | /nɔːˈsɪkeɪ.ə/ naw-SIK-ay-ə |
Named after | Nausicaä |
| Main belt | |
| Orbital characteristics | |
| Aphelion | 2.997 AU |
| Perihelion | 1.808 AU |
| 2.402 AU | |
| Eccentricity | 0.247 |
| 3.72 years | |
| Inclination | 6.83° |
| Physical characteristics | |
| Dimensions | 90.18 ± 2.80[1] km |
| Mass | (1.79 ± 0.42) × 1018[1] kg |
Mean density | 4.64 ± 1.17[1] g/cm3 |
| 13.622 hours | |
| Albedo | 0.233 |
Spectral type | S |
| 8.2 | |
| 7.13 | |
|
| |
.png)
192 Nausikaa[2] is a large main-belt S-type asteroid. It was discovered by Johann Palisa on February 17, 1879 at Pula, then in Austria, now in Croatia. The name derives from Nausicaä, a princess in Homer's Odyssey.
This is an S-type asteroid around 86 km with an elliptical ratio of 1.51. The sidereal rotation period is 13.6217 hours.[3]
Based on the lightcurve data obtained from Nausikaa, a possible satellite was reported in 1985. However, this has not been confirmed.[4] A shape model of Nausikaa has been constructed, also based on the lightcurve data. It indicates a roughly cut, but not very elongated body.[5] In 1998 an occultation of a star by the asteroid was observed from the United States.
In 1988 a search for satellites or dust orbiting this asteroid was performed using the UH88 telescope at the Mauna Kea Observatories, but the effort came up empty.[6]
Nausikaa's orbital period is 3.72 years, its distance from the Sun varying between 1.81 and 2.99 AU. The orbital eccentricity is 0.246. Nausikaa brightened to magnitude 8.3 at a quite favorable opposition on 2 September 2011, when it was 1.875 AU from the Sun and 0.866 AU from the Earth.
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.
- ↑ Stressed on the second syllable, /nɔːˈsɪkeɪ.ə/ naw-SIK-ay-ə.
- ↑ Marchis, F.; et al. (November 2006), "Shape, size and multiplicity of main-belt asteroids. I. Keck Adaptive Optics survey", Icarus 185 (1), pp. 39–63, Bibcode:2006Icar..185...39M, doi:10.1016/j.icarus.2006.06.001, PMC 2600456, PMID 19081813.
- ↑ Other reports of asteroid/TNO companions, Johnstonsarchive.net, retrieved 2012-09-01
- ↑ http://www.astro.helsinki.fi/~kaselain/asteroids.html
- ↑ Gradie, J.; Flynn, L. (March 1988), "A Search for Satellites and Dust Belts Around Asteroids: Negative Results", Abstracts of the Lunar and Planetary Science Conference 19, pp. 405–406, Bibcode:1988LPI....19..405G.
External links
| ||||||
| ||||||||||||||||||||||||||||