Astronomy:720 Bohlinia
.png) A three-dimensional model of 720 Bohlinia based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | Franz Kaiser |
| Discovery site | Heidelberg |
| Discovery date | 18 October 1911 |
| Designations | |
| (720) Bohlinia | |
| 1911 MW | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 117.11 yr (42775 d) |
| |{{{apsis}}}|helion}} | 2.9376 astronomical unit|AU (439.46 Gm) |
| |{{{apsis}}}|helion}} | 2.8371 AU (424.42 Gm) |
| 2.8873 AU (431.93 Gm) | |
| Eccentricity | 0.017406 |
| Orbital period | 4.91 yr (1792.0 d) |
| Mean anomaly | 350.275° |
| Mean motion | 0° 12m 3.204s / day |
| Inclination | 2.3562° |
| Longitude of ascending node | 35.706° |
| 118.762° | |
| Physical characteristics | |
| Mean radius | 16.865±0.7 km[1] 17.32 ± 0.905 km[2] |
| Mass | (5.97 ± 0.80) × 1016 kg[2] |
| Mean density | 2.74 ± 0.56 g/cm3[2] |
| Rotation period | 8.919 h (0.3716 d) |
| Geometric albedo | 0.203[3] 0.2029±0.018[1] |
| Absolute magnitude (H) | 9.71[3] 9.6[1] |
720 Bohlinia is a minor planet orbiting the Sun that was discovered by Franz Kaiser, a German astronomer in 1911. It is named for Swedish astronomer Karl Petrus Theodor Bohlin, to mark his 65th birthday.[4] He had worked on the orbits of asteroids.[5]
It is one of the Koronis family of asteroids. A group of astronomers, including Lucy d’Escoffier Crespo da Silva and Richard P. Binzel, used observations made between 1998 through 2000 to determine the spin-vector alignment of these asteroids. The collaborative work resulted in the creation of 61 new individual rotation lightcurves to augment previous published observations.[6]
Binzel and Schelte Bus further added to the knowledge about this asteroid in a lightwave survey published in 2003. This project was known as Small Main-belt Asteroid Spectroscopic Survey, Phase II or SMASSII, which built on a previous survey of the main-belt asteroids. The visible-wavelength (0.435-0.925 micrometre) spectra data was gathered between August 1993 and March 1999.[7]
References
- ↑ 1.0 1.1 1.2 1.3 "720 Bohlinia (1911 MW)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=720;cad=1.
- ↑ 2.0 2.1 2.2 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science 73 (1): 98–118, doi:10.1016/j.pss.2012.03.009, Bibcode: 2012P&SS...73...98C. See Table 1.
- ↑ 3.0 3.1 Delbo', Marco; Tanga, Paolo (February 2009), "Thermal inertia of main belt asteroids smaller than 100 km from IRAS data", Planetary and Space Science 57 (2): 259–265, doi:10.1016/j.pss.2008.06.015, Bibcode: 2009P&SS...57..259D.
- ↑ "Small-Body Database Lookup". http://ssd.jpl.nasa.gov/sbdb.cgi#top.
- ↑ Hockey, Thomas (2009). The Biographical Encyclopedia of Astronomers. Springer Publishing. ISBN 978-0-387-31022-0. http://www.springerreference.com/docs/html/chapterdbid/58180.html. Retrieved August 22, 2012.
- ↑ Slivan, S. M., Binzel, R. P., Crespo da Silva, L. D., Kaasalainen, M., Lyndaker, M. M., Krco, M.: “Spin vectors in the Koronis family: comprehensive results from two independent analyses of 213 rotation lightcurves,”Icarus, 162, 2003, pp. 285–307.
- ↑ Bus, S., Binzel, R. P. Small Main-belt Asteroid Spectroscopic Survey, Phase II. EAR-A-I0028-4-SBN0001/SMASSII-V1.0. NASA Planetary Data System, 2003.
External links
- 720 Bohlinia at AstDyS-2, Asteroids—Dynamic Site
- 720 Bohlinia at the JPL Small-Body Database
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