222 Lucia
|
A three-dimensional model of 222 Lucia based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 9 February 1882 |
| Designations | |
| A899 EC, A919 AB | |
| Main belt (Themis) | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 117.10 yr (42769 d) |
| Aphelion | 3.5529 AU (531.51 Gm) |
| Perihelion | 2.7296 AU (408.34 Gm) |
| 3.1412 AU (469.92 Gm) | |
| Eccentricity | 0.13105 |
| 5.57 yr (2033.5 d) | |
Average orbital speed | 16.82 km/s |
| 349.267° | |
| 0° 10m 37.308s / day | |
| Inclination | 2.1494° |
| 80.141° | |
| 180.953° | |
| Earth MOID | 1.71397 AU (256.406 Gm) |
| Jupiter MOID | 1.50631 AU (225.341 Gm) |
| Jupiter Tisserand parameter | 3.196 |
| Physical characteristics | |
| Dimensions | 54.66±3.9 km |
| 7.80 h (0.325 d) | |
| 0.1318±0.021 | |
| C? | |
| 9.13 | |
|
| |
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222 Lucia is a large Themistian asteroid. It was discovered by Johann Palisa on February 9, 1882 in Vienna and named after Lucia, daughter of Austro-Hungarian explorer Graf Wilczek.
This object is spectral C-type and is probably composed of primitive carbonaceous material. Based upon analysis of infrared spectra, it has a diameter of 59.8 ± 0.8 km. This object belongs to the Themis family, which was formed by the break-up of a larger parent body about a billion years ago.[2]
References
- ↑ "222 Lucia". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
- ↑ Lagoa, V. Alí; et al., "5-14 μm Spitzer spectra of Themis family asteroids", Astronomy & Astrophysics, 537: A73, Bibcode:2012A&A...537A..73L, doi:10.1051/0004-6361/201118142.
External links
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
- 222 Lucia at the JPL Small-Body Database
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