720 Bohlinia

720 Bohlinia
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
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
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]
8.919 h (0.3716 d)
0.203[3]
0.2029±0.018[1]
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. 1 2 3 4 "720 Bohlinia (1911 MW)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 6 May 2016.
    2. 1 2 3 Carry, B. (December 2012), "Density of asteroids", Planetary and Space Science, 73, pp. 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009. See Table 1.
    3. 1 2 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), pp. 259–265, arXiv:0808.0869, Bibcode:2009P&SS...57..259D, doi:10.1016/j.pss.2008.06.015.
    4. ↑ http://ssd.jpl.nasa.gov/sbdb.cgi#top
    5. ↑ Hockey, Thomas (2009). The Biographical Encyclopedia of Astronomers. Springer Publishing. ISBN 978-0-387-31022-0. Retrieved August 22, 2012.
    6. ↑ 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.
    7. ↑ 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.


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