233 Asterope

From Wikipedia, the free encyclopedia
Jump to: navigation, search
233 Asterope
Discovered by A. Borrelly
Discovery date May 11, 1883
Named after
Main belt
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion 2.927 AU
Perihelion 2.393 AU
2.66 AU
Eccentricity 0.1
1584.533 d
(4.34 yr)
18.26 km/s
Inclination 7.675°
Physical characteristics
Dimensions 103.0 km
19.70 h
Albedo 0.087
Spectral type

233 Asterope is a main-belt asteroid that was discovered by A. Borrelly on May 11, 1883, in Marseilles, France. The asteroid was named after Asterope (or Sterope), one of the Pleiades. It is a rare T-type asteroid[1] and has a relatively dark surface. The spectrum of 233 Asterope bears a resemblance to Troilite, a sulfurous iron mineral found in most iron meteorites.[2]

Photometric observations during 1995 show a rotation period of 19.743 hours.[1] Measurements made with the IRAS observatory give a diameter of 109.56 ± 5.04 km and a geometric albedo of 0.08 ± 0.01. By comparison, the MIPS photometer on the Spitzer Space Telescope gives a diameter of 97.54 ± 10.32 km and a geometric albedo of 0.10 ± 0.01.[3]


  1. ^ a b Piironen, J. et al. (March 1998), "Physical studies of asteroids. XXXII. Rotation periods and UBVRI-colours for selected asteroids", Astronomy and Astrophysics Supplement 128: 525–540, Bibcode:1998A&AS..128..525P, doi:10.1051/aas:1998393. 
  2. ^ Britt, D. T. et al. (July 1992), "The Reflectance Spectrum of Troilite and the T-Type Asteroids", Meteoritics 27 (3): 207, Bibcode:1992Metic..27Q.207B. 
  3. ^ Ryan, Erin Lee et al. (April 2012), "The Kilometer-Sized Main Belt Asteroid Population as Revealed by Spitzer", eprint arXiv, arXiv:1204.1116, Bibcode:2012arXiv1204.1116R. 

External links[edit]