211 Isolda
From Infogalactic: the planetary knowledge core
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | December 10, 1879 |
| Designations | |
|
Named after
|
Iseult |
| A912 AB, A912 BA, 1950 FM |
|
| Main belt | |
| Orbital characteristics | |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 528.554 Gm (3.533 AU) |
| Perihelion | 380.83 Gm (2.546 AU) |
| 454.692 Gm (3.039 AU) | |
| Eccentricity | 0.162 |
| 1935.434 d (5.3 a) | |
|
Average orbital speed
|
17.08 km/s |
| 197.831° | |
| Inclination | 3.883° |
| 263.771° | |
| 174.924° | |
| Physical characteristics | |
| Dimensions | 149.81 ± 6.10[1] km |
| Mass | (4.49 ± 2.43) × 1018[1] kg |
|
Mean density
|
2.54 ± 1.41[1] g/cm3 |
| 18.365 h | |
| Albedo | 0.0598 ± 0.0218[2] |
|
Spectral type
|
C[2] (Tholen) |
| 7.90[2] | |
211 Isolda is a very large, dark main-belt asteroid. It is classified as a C-type asteroid and is probably composed of primitive carbonaceous material.
It was discovered by Austrian astronomer Johann Palisa on December 10, 1879, in Pola, and named after Isolde, heroine of the legend of Tristan and Iseult.
In 2001, the asteroid was detected by radar from the Arecibo Observatory at a distance of 1.78 AU. The resulting data yielded an effective diameter of 143 ± 16 km.[3]
References
External links
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
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