720 Bohlinia
A three-dimensional model of 720 Bohlinia based on its light curve
Discovery
Discovered byFranz Kaiser
Discovery siteHeidelberg
Discovery date18 October 1911
Designations
(720) Bohlinia
1911 MW
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc117.11 yr (42775 d)
Aphelion2.9376 AU (439.46 Gm)
Perihelion2.8371 AU (424.42 Gm)
2.8873 AU (431.93 Gm)
Eccentricity0.017406
4.91 yr (1792.0 d)
350.275°
0° 12m 3.204s / day
Inclination2.3562°
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 (1): 98–118, arXiv:1203.4336, Bibcode:2012P&SS...73...98C, doi:10.1016/j.pss.2012.03.009, S2CID 119226456. 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): 259–265, arXiv:0808.0869, Bibcode:2009P&SS...57..259D, doi:10.1016/j.pss.2008.06.015, S2CID 14517561.
    4. ↑ "Small-Body Database Lookup".
    5. ↑ Hockey, Thomas (2009). The Biographical Encyclopedia of Astronomers. Springer Publishing. ISBN 978-0-387-31022-0. Retrieved 22 August 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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