233 Asterope

From Wikipedia, the free encyclopedia
Jump to: navigation, search
233 Asterope
Discovery
Discovered by A. Borrelly
Discovery date May 11, 1883
Designations
Named after
Sterope
n/a
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
263.357°
Inclination 7.675°
222.121°
126.274°
Physical characteristics
Dimensions 103.0 km
19.70 h
Albedo 0.087
Spectral type
T
8.21

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]

References[edit]

  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]