720 Bohlinia
Main-belt asteroid
From Wikipedia, the free encyclopedia
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]
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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) |
| Aphelion | 2.9376 AU (439.46 Gm) |
| Perihelion | 2.8371 AU (424.42 Gm) |
| 2.8873 AU (431.93 Gm) | |
| Eccentricity | 0.017406 |
| 4.91 yr (1792.0 d) | |
| 350.275° | |
| 0° 12m 3.204s / day | |
| Inclination | 2.3562° |
| 35.706° | |
| 118.762° | |
| Physical characteristics | |
| 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] |
| 8.919 h (0.3716 d) | |
| 0.203[3] 0.2029±0.018[1] | |
| 9.71[3] 9.6[1] | |
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]
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