218 Bianca

From Wikipedia, the free encyclopedia
Jump to: navigation, search
There is also a moon called Bianca.
218 Bianca
218Bianca (Lightcurve Inversion).png
A three-dimensional model of 218 Bianca based on its light curve.
Discovery
Discovered by Johann Palisa
Discovery date September 4, 1880
Designations
Minor planet category Main belt
Orbital characteristics
Epoch 30 January, 2005 (JD 2453400.5)
Aphelion 445.878 Gm (2.981 AU)
Perihelion 351.958 Gm (2.353 AU)
398.918 Gm (2.667 AU)
Eccentricity 0.118
1590.479 d (4.35 a)
18.24 km/s
301.767°
Inclination 15.231°
170.896°
60.97°
Physical characteristics
Dimensions 56.735[1] km
6.33717[2] h
Albedo 0.1979 ± 0.0407[1]
Spectral type
S[1] (Tholen)
8.607[1]

218 Bianca is a sizeable Main belt asteroid. It is an S-type asteroid.

It was discovered by Johann Palisa on September 4, 1880, in Pola and was named after the Austro-Hungarian opera singer Bianca Bianchi (real name Bertha Schwarz). The Vienna newspapers contained several published accounts of the circumstances surrounding the honor extended to the diva in Spring 1882.[3]

In the late 1990s, a network of astronomers worldwide gathered lightcurve data that was ultimately used to derive the spin states and shape models of ten new asteroids, including (218) Bianca. The shape model for this asteroid is asymmetrical.[2][4]

References[edit]

  1. ^ a b c d Pravec, P. et al. (May 2012), Absolute Magnitudes of Asteroids and a Revision of Asteroid Albedo Estimates from WISE Thermal Observations, Asteroids, Comets, Meteors 2012, Proceedings of the conference held May 16-20, 2012 in Niigata, Japan (1667), Bibcode:2012LPICo1667.6089P.  See Table 4.
  2. ^ a b Durech, J. et al. (April 2007), Physical models of ten asteroids from an observers' collaboration network, Astronomy and Astrophysics 465 (1): 331–337, Bibcode:2007A&A...465..331D, doi:10.1051/0004-6361:20066347. 
  3. ^ Schmadel, Lutz D. (2003). Dictionary of minor planet names (5 ed.). Springer. pp. 34–35. ISBN 978-3-540-00238-3. Retrieved 6 April 2010. 
  4. ^ Durech, J.; Kaasalainen, M.; Marciniak, A.; Allen, W. H. et al. “Asteroid brightness and geometry,” Astronomy and Astrophysics, Volume 465, Issue 1, April I 2007, pp. 331-337.

External links[edit]