218 Bianca
From Wikipedia, the free encyclopedia
- There is also a moon called Bianca.
| 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[1] km |
| 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
- ↑ 1.0 1.1 1.2 1.3 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.
- ↑ 2.0 2.1 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.
- ↑ 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.
- ↑ 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
| |||||
| ||||||||||||||||||||||
This article is issued from Wikipedia. The text is available under the Creative Commons Attribution/Share Alike; additional terms may apply for the media files.