192 Nausikaa

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192 Nausikaa
192Nausikaa (Lightcurve Inversion).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
Pronunciation /nɔːˈsɪk.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

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[edit]

  1. ^ a b "192 Nausikaa". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016. 
  2. ^ a b c 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.
  3. ^ Stressed on the second syllable, /nɔːˈsɪk.ə/ naw-SIK-ay-ə.
  4. ^ 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. 
  5. ^ Other reports of asteroid/TNO companions, Johnstonsarchive.net, retrieved 2012-09-01 
  6. ^ http://www.astro.helsinki.fi/~kaselain/asteroids.html
  7. ^ 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[edit]