.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 | |
| MPC designation | (720) Bohlinia |
| Alternative designations | 1911 MW |
| Orbital characteristics | |
| 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) |
| Semi-major axis | 2.8873 AU (431.93 Gm) |
| Eccentricity | 0.017406 |
| Orbital period (sidereal) | 4.91 yr (1792.0 d) |
| Mean anomaly | 350.275° |
| Mean motion | 0° 12 3.204 / day |
| Inclination | 2.3562° |
| Longitude of ascending node | 35.706° |
| Argument of perihelion | 118.762° |
| Physical characteristics | |
| Mean radius | 16.865±0.7 km 17.32 ± 0.905 km |
| Mass | (5.97 ± 0.80) × 10 kg |
| Mean density | 2.74 ± 0.56 g/cm |
| Synodic rotation period | 8.919 h (0.3716 d) |
| Geometric albedo | 0.203 0.2029±0.018 |
| Absolute magnitude (H) | 9.71 9.6 |
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. He had worked on the orbits of asteroids.
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.
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.
References
- ^ "720 Bohlinia (1911 MW)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 6 May 2016.
- ^ Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73 (1): 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009, S2CID 119226456. See Table 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, arXiv:0808.0869, Bibcode:2009P&SS...57..259D, doi:10.1016/j.pss.2008.06.015, S2CID 14517561.
- "Small-Body Database Lookup".
- Hockey, Thomas (2009). The Biographical Encyclopedia of Astronomers. Springer Publishing. ISBN 978-0-387-31022-0. Retrieved 22 August 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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