119 Althaea

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119 Althaea
119Althaea (Lightcurve Inversion).png
A three-dimensional model of 119 Althaea based on its light curve.
Discovery
Discovered by James Craig Watson
Discovery date April 3, 1872
Designations
Named after
Althaea
Minor planet category Main belt
Orbital characteristics[1]
Epoch December 31, 2006 (JD 2454100.5)
Aphelion 417.511 Gm (2.791 AU)
Perihelion 354.870 Gm (2.372 AU)
386.190 Gm (2.582 AU)
Eccentricity 0.081
1515.000 d (4.15 a)
18.51 km/s
1.847°
Inclination 5.778°
203.738°
171.282°
Physical characteristics
Dimensions 57.3 km
Mass 2.0×1017 kg
0.0160 m/s²
0.0303 km/s
11.484[2] h
Temperature ~173 K
Spectral type
S
8.42

119 Althaea is a main-belt asteroid that was discovered by Canadian-American astronomer J. C. Watson on April 3, 1872,[2] and named after Althaea, the mother of Meleager in Greek mythology. Two occultations by Althaea were observed in 2002, only a month apart.

Based upon its spectrum, this is classified as an S-type asteroid.[3] Photometric observations made in 1988 at the Félix Aguilar Observatory produced a light curve with a period of 11.484 ± 0.010 hours with a brightness variation of 0.365 ± 0.010 in magnitude.[2]

References[edit]

  1. ^ Yeomans, Donald K., "119 Althaea", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-25. 
  2. ^ a b c Hutton, R. G. (June 1990), "V+B Photoelectric Photometry of Asteroid 119 Althaea", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 17: 15-17, Bibcode:1990MPBu...17...15H. 
  3. ^ DeMeo, Francesca E. et al. (July 2009), "An extension of the Bus asteroid taxonomy into the near-infrared", Icarus 202 (1): 160–180, Bibcode:2009Icar..202..160D, doi:10.1016/j.icarus.2009.02.005, retrieved 2013-04-08.  See appendix A.