218 Bianca

There is also a moon called Bianca.

218 Bianca

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)
Semi-major axis	398.918 Gm (2.667 AU)
Eccentricity	0.118
Orbital period	1590.479 d (4.35 a)
Average orbital speed	18.24 km/s
Mean anomaly	301.767°
Inclination	15.231°
Longitude of ascending node	170.896°
Argument of perihelion	60.97°
Physical characteristics
Dimensions	56.735 km[1]
Rotation period	6.33717[2] h
Albedo	0.1979 ± 0.0407[1]
Spectral type	S[1] (Tholen)
Absolute magnitude (H)	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

1. 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. 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 (5th 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

• Asteroid Lightcurve Data File
• 218 Bianca at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters