720 Bohlinia

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720 Bohlinia
720Bohlinia (Lightcurve Inversion).png
A three-dimensional model of 720 Bohlinia based on its light curve
Discovery
Discovered by Franz Kaiser
Discovery site Heidelberg
Discovery date18 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]

    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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