233 Asterope

233 Asterope
	3D model based on lightcurve data
Discovery
Discovered by	A. Borrelly
Discovery site	Marseille Obs.
Discovery date	11 May 1883
Designations
MPC designation	(233) Asterope
Pronunciation	/əˈstɛrəpiː/[1]
Named after	Sterope
Alternative designations	A883 JA
Minor planet category	Main belt
Orbital characteristics [2]
	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)
Semi-major axis	2.6599 AU (397.92 Gm)
Eccentricity	0.10044
Orbital period (sidereal)	4.34 yr (1584.5 d)
Mean anomaly	138.789°
Mean motion	0° 13m 37.92s / day
Inclination	7.6832°
Longitude of ascending node	222.017°
Argument of perihelion	125.128°
Physical characteristics
Dimensions	102.78±7.9 km
Synodic rotation period	19.70 h (0.821 d)
Geometric albedo	0.0870±0.015
Spectral type	Tholen = T [2]; SMASS = K [2]
Absolute magnitude (H)	8.21[2]

Asterope (minor planet designation: 233 Asterope) is a large main-belt asteroid that was discovered on 11 May 1883, by French astronomer Alphonse Borrelly at Marseille Observatory in Marseille, France. The asteroid was named after Asterope (or Sterope), one of the Pleiades.

This asteroid is orbiting the Sun with a semimajor axis of 2.66 AU, a period of 4.34 years, and an eccentricity of 0.10. The orbital plane is inclined by 7.68° to the plane of the ecliptic. It is a rare T-type asteroid[3] 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.[4]

Photometric observations during 1995 show a rotation period of 19.743 hours.[3] 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.[5]

References

Noah Webster (1884) A Practical Dictionary of the English Language
"233 Asterope". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Archived from the original on 20 September 2020. Retrieved 12 May 2016.
Piironen, J.; et al. (March 1998), "Physical studies of asteroids. XXXII. Rotation periods and UBVRI-colours for selected asteroids", Astronomy and Astrophysics Supplement, 128 (3): 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", arXiv:1204.1116 [astro-ph.EP]

External links

The Asteroid Orbital Elements Database
Minor Planet Discovery Circumstances
Asteroid Lightcurve Data File
233 Asterope at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
233 Asterope at the JPL Small-Body Database

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[1] Noah Webster (1884) A Practical Dictionary of the English Language

[jpldata-2] "233 Asterope". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Archived from the original on 20 September 2020. Retrieved 12 May 2016.

[aas128_525-3] Piironen, J.; et al. (March 1998), "Physical studies of asteroids. XXXII. Rotation periods and UBVRI-colours for selected asteroids", Astronomy and Astrophysics Supplement, 128 (3): 525–540, Bibcode:1998A&AS..128..525P, doi:10.1051/aas:1998393

[met27_3_207-4] 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

[2012arXiv1204-5] Ryan, Erin Lee; et al. (April 2012), "The Kilometer-Sized Main Belt Asteroid Population as Revealed by Spitzer", arXiv:1204.1116 [astro-ph.EP]