218 Bianca
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A three-dimensional model of 218 Bianca based on its light curve.
|
|
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 4 September 1880 |
| Designations | |
| Main belt | |
| Orbital characteristics | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 122.41 yr (44709 d) |
| Aphelion | 2.97915 AU (445.674 Gm) |
| Perihelion | 2.35524 AU (352.339 Gm) |
| 2.66719 AU (399.006 Gm) | |
| Eccentricity | 0.11696 |
| 4.36 yr (1591.0 d) | |
|
Average orbital speed
|
18.24 km/s |
| 170.102° | |
| 0° 13m 34.565s / day | |
| Inclination | 15.2006° |
| 170.635° | |
| 63.0175° | |
| Earth MOID | 1.38892 AU (207.779 Gm) |
| Jupiter MOID | 2.08234 AU (311.514 Gm) |
| Jupiter Tisserand parameter | 3.323 |
| Physical characteristics | |
| Dimensions |
60.62±1.4 km 56.735 km |
| 6.337 h (0.2640 d) 6.33717 h |
|
|
0.1746±0.008 0.1979 ± 0.0407 |
|
| S (Tholen) | |
| 8.60, 8.607 | |
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.
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.
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