Lucia (minor planet designation: 222 Lucia) is a large Themistian asteroid. It was discovered by Johann Palisa on 9 February 1882 in Vienna and named after Lucia, daughter of Austro-Hungarian explorer Graf Wilczek.
![]() A three-dimensional model of 222 Lucia based on its light curve. | |
Discovery | |
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Discovered by | Johann Palisa |
Discovery date | 9 February 1882 |
Designations | |
MPC designation | (222) Lucia |
Pronunciation | /ˈluːʃiə/[1] German: [ˈluːtsiɐ] |
Alternative designations | A882 CA, 1899 EC 1919 AB |
Minor planet category | Main belt (Themis) |
Orbital characteristics[2] | |
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) |
Semi-major axis | 3.1412 AU (469.92 Gm) |
Eccentricity | 0.13105 |
Orbital period (sidereal) | 5.57 yr (2033.5 d) |
Average orbital speed | 16.82 km/s |
Mean anomaly | 349.267° |
Mean motion | 0° 10m 37.308s / day |
Inclination | 2.1494° |
Longitude of ascending node | 80.141° |
Argument of perihelion | 180.953° |
Physical characteristics | |
Dimensions | 54.66±3.9 km |
Synodic rotation period | 7.80 h (0.325 d) |
Geometric albedo | 0.1318±0.021 |
Spectral type | C? |
Absolute magnitude (H) | 9.13 |
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.[3]
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