88 Thisbe
![]() A three-dimensional model of 88 Thisbe based on its light curve. | |
Discovery | |
---|---|
Discovered by | Christian Heinrich Friedrich Peters |
Discovery date | June 15, 1866 |
Designations | |
(88) Thisbe | |
Pronunciation | /ˈθɪzbiː/[1] |
Named after | Thisbē |
Main belt | |
Adjectives | Thisbean /θɪzˈbiːən/, /ˈθɪzbiən/ |
Orbital characteristics[2] | |
Epoch December 31, 2006 (JD 2454100.5) | |
Aphelion | 482.242 Gm (3.224 AU) |
Perihelion | 345.809 Gm (2.312 AU) |
414.025 Gm (2.768 AU) | |
Eccentricity | 0.165 |
1681.709 d (4.60 a) | |
165.454° | |
Inclination | 5.219° |
276.765° | |
36.591° | |
Physical characteristics | |
Dimensions | (255×232×193)±12 km[3] 225 km (mean) 232 km(Dunham)[2] |
Mass | 1.83×1019 kg[3] 1.5×1019 kg[4][5] |
Mean density | 3.06±0.52 g/cm³[3] |
6.04[6] h | |
0.067[2][7] | |
B [2] | |
7.04[2] | |
Thisbe, minor planet designation 88 Thisbe, is the 13th largest main-belt asteroids. It was discovered by C. H. F. Peters on June 15, 1866, and named after Thisbe, heroine of a Roman fable. An occultation of a star by Thisbe was observed on October 7, 1981. Results from the occultation indicate a larger than expected diameter of 232 km.[8][9]
During 2000, 88 Thisbe was observed by radar from the Arecibo Observatory. The return signal matched an effective diameter of 207 ± 22 km. This is consistent with the asteroid dimensions computed through other means.[10]
Photometric observations of this asteroid during 1977 gave a light curve with a period of 6.0422 ± 0.006 hours and a brightness variation of 0.19 in magnitude.[6]
Perturbation
Thisbe has been perturbed by asteroid 7 Iris and in 2001 Michalak estimated it to have a mass of 1.5×1019 kg.[4][5] But Iris is strongly perturbed by many minor planets such as 10 Hygiea and 15 Eunomia.[4]
In 2008, Baer estimated Thisbe to have a mass of 1.05×1019 kg.[3] In 2011 Baer revised this to 1.83×1019 kg with an uncertainty of 1.09×1018 kg.[3]
References
- ^ Noah Webster (1884) A Practical Dictionary of the English Language
- ^ a b c d e Yeomans, Donald K., "88 Thisbe", JPL Small-Body Database Browser, NASA Jet Propulsion Laboratory, retrieved 25 March 2013.
- ^ a b c d e Jim Baer (2011). "Recent Asteroid Mass Determinations". Personal Website. Archived from the original on 2 July 2013. Retrieved 12 April 2012.
- ^ a b c Michalak, G. (2001). "Determination of asteroid masses". Astronomy & Astrophysics. 374 (2): 703–711. Bibcode:2001A&A...374..703M. doi:10.1051/0004-6361:20010731. Retrieved 6 November 2008.
- ^ a b (Low mass estimate of Thisbe 0.074 / Mass of Ceres 4.75) * Mass of Ceres 9.43E+20 = 1.469E+19
- ^ a b Schober, H. J.; et al. (April 1979), "Photoelectric photometry and rotation periods of three large and dark asteroids - 49 Pales, 88 Thisbe and 92 Undina", Astronomy and Astrophysics Supplement Series, vol. 36, pp. 1–8, Bibcode:1979A&AS...36....1S.
- ^ Asteroid Data Sets Archived 2009-12-17 at the Wayback Machine
- ^ Taylor, G. E., "Progress in accurate determinations of diameters of minor planets", Asteroids, comets, meteors; Proceedings of the Meeting, Uppsala, Sweden, June 20–22, 1983, pp. 107–109, Bibcode:1983acm..proc..107T.
- ^ Observed minor planet occultation events, version of 2005 July 26
- ^ Magri, Christopher; et al. (January 2007), "A radar survey of main-belt asteroids: Arecibo observations of 55 objects during 1999–2003", Icarus, 186 (1): 126–151, Bibcode:2007Icar..186..126M, doi:10.1016/j.icarus.2006.08.018
External links
- 88 Thisbe at AstDyS-2, Asteroids—Dynamic Site
- 88 Thisbe at the JPL Small-Body Database