Astronomy:192 Nausikaa
.png) A three-dimensional model of 192 Nausikaa based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | J. Palisa, 1879 |
| Discovery date | 17 February 1879 |
| Designations | |
| (192) Nausikaa | |
| Pronunciation | /nɔːˈsɪki.ə/[1] |
| Named after | Nausicaä |
| A879 DA; 1933 HH | |
| Minor planet category | Main belt |
| Adjectives | Nausikaan[2] |
| Orbital characteristics[3] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 137.04 yr (50054 d) |
| |{{{apsis}}}|helion}} | 2.9934 astronomical unit|AU (447.81 Gm) |
| |{{{apsis}}}|helion}} | 1.8121 AU (271.09 Gm) |
| 2.4028 AU (359.45 Gm) | |
| Eccentricity | 0.24582 |
| Orbital period | 3.72 yr (1360.4 d) |
| Mean anomaly | 94.342° |
| Mean motion | 0° 15m 52.632s / day |
| Inclination | 6.8137° |
| Longitude of ascending node | 343.25° |
| 30.067° | |
| Earth MOID | 0.814558 AU (121.8561 Gm) |
| Jupiter MOID | 2.48275 AU (371.414 Gm) |
| TJupiter | 3.474 |
| Physical characteristics | |
| Dimensions | 103.26±1.9 km[3] 90.18 ± 2.80 km[4] |
| Mass | (1.79 ± 0.42) × 1018 kg[4] |
| Mean density | 4.64 ± 1.17 g/cm3[4] |
| Rotation period | 13.625 h (0.5677 d) |
| Geometric albedo | 0.2330±0.009 |
| S | |
| Apparent magnitude | 8.2 |
| Absolute magnitude (H) | 7.13 |
Nausikaa[5] (minor planet designation: 192 Nausikaa) 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.[6]
Based on the lightcurve data obtained from Nausikaa, a possible satellite was reported in 1985. However, this has not been confirmed.[7] A shape model of Nausikaa has been constructed, also based on the lightcurve data. It indicates a roughly cut, but not very elongated body.[8] 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.[9]
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
- ↑ "Nausicäa". Dictionary.com Unabridged. Random House. https://www.dictionary.com/browse/Nausic%C3%A4a.
- ↑ Cf. James Joyce's Ulysses: critical essays (1974) Hart & Hayman
- ↑ 3.0 3.1 "192 Nausikaa". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=192;cad=1.
- ↑ 4.0 4.1 4.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73: pp. 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. See Table 1.
- ↑ Stressed on the 'i', /nɔːˈsɪkiə/.
- ↑ 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, doi:10.1016/j.icarus.2006.06.001, PMID 19081813, Bibcode: 2006Icar..185...39M.
- ↑ Other reports of asteroid/TNO companions, Johnstonsarchive.net, http://www.johnstonsarchive.net/astro/asteroidmoonsq.html, retrieved 2012-09-01
- ↑ "New worlds in our solar system". 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
- 192 Nausikaa at AstDyS-2, Asteroids—Dynamic Site
- 192 Nausikaa at the JPL Small-Body Database
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