233 Asterope

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233 Asterope
Discovery
Discovered by A. Borrelly
Discovery date 11 May 1883
Designations
Named after
Sterope
n/a
Main belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 118.65 yr (43337 d)
Aphelion 2.9271 AU (437.89 Gm)
Perihelion 2.3927 AU (357.94 Gm)
2.6599 AU (397.92 Gm)
Eccentricity 0.10044
4.34 yr (1584.5 d)
18.26 km/s
138.789°
0° 13m 37.92s / day
Inclination 7.6832°
222.017°
125.128°
Earth MOID 1.39575 AU (208.801 Gm)
Jupiter MOID 2.45627 AU (367.453 Gm)
Jupiter Tisserand parameter 3.366
Physical characteristics
Dimensions 102.78±7.9 km
19.70 h (0.821 d)
0.0870±0.015
T
8.21

233 Asterope is a main-belt asteroid that was discovered by A. Borrelly on May 11, 1883, in Marseille, France. The asteroid was named after Asterope (or Sterope), one of the Pleiades. It is a rare T-type asteroid[2] 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.[3]

Photometric observations during 1995 show a rotation period of 19.743 hours.[2] 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.[4]

References[edit]

  1. ^ "233 Asterope". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016. 
  2. ^ 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. 
  3. ^ 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. 
  4. ^ 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]