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) | |
Average orbital speed | 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 | |
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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[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
- 1 2 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.
- ↑ 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.
- ↑ 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
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
- 233 Asterope at the JPL Small-Body Database
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