192 Nausikaa
|
A three-dimensional model of 192 Nausikaa based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | J. Palisa, 1879 |
| Discovery date | 17 February 1879 |
| Designations | |
| Pronunciation | /nɔːˈsɪkeɪ.ə/ naw-SIK-ay-ə |
Named after | Nausicaä |
| Main belt | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 137.04 yr (50054 d) |
| Aphelion | 2.9934 AU (447.81 Gm) |
| Perihelion | 1.8121 AU (271.09 Gm) |
| 2.4028 AU (359.45 Gm) | |
| Eccentricity | 0.24582 |
| 3.72 yr (1360.4 d) | |
| 94.342° | |
| 0° 15m 52.632s / day | |
| Inclination | 6.8137° |
| 343.25° | |
| 30.067° | |
| Earth MOID | 0.814558 AU (121.8561 Gm) |
| Jupiter MOID | 2.48275 AU (371.414 Gm) |
| Jupiter Tisserand parameter | 3.474 |
| Physical characteristics | |
| Dimensions |
103.26±1.9 km[1] 90.18 ± 2.80 km[2] |
| Mass | (1.79 ± 0.42) × 1018 kg[2] |
Mean density | 4.64 ± 1.17 g/cm3[2] |
| 13.625 h (0.5677 d) | |
| 0.2330±0.009 | |
| S | |
| 8.2 | |
| 7.13 | |
|
| |
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192 Nausikaa[3] 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.[4]
Based on the lightcurve data obtained from Nausikaa, a possible satellite was reported in 1985. However, this has not been confirmed.[5] A shape model of Nausikaa has been constructed, also based on the lightcurve data. It indicates a roughly cut, but not very elongated body.[6] 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.[7]
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 "192 Nausikaa". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
- 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.
