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) | |
Average orbital speed | 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 | ±7.9 km 102.78 |
19.70 h (0.821 d) | |
±0.015 0.0870 | |
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
- ↑ "233 Asterope". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
- 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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