222 Lucia

222 Lucia

Discovery
Discovered by	Johann Palisa
Discovery date	February 9, 1882
Designations
Alternative names	A899 EC, A919 AB
Minor planet category	Main belt (Themis)
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion	534.575 Gm (3.573 AU)
Perihelion	403.737 Gm (2.699 AU)
Semi-major axis	469.156 Gm (3.136 AU)
Eccentricity	0.139
Orbital period (sidereal)	2028.512 d (5.55 a)
Average orbital speed	16.82 km/s
Mean anomaly	327.086°
Inclination	2.158°
Longitude of ascending node	80.328°
Argument of perihelion	178.579°
Physical characteristics
Dimensions	55.0 km
Mass	unknown
Mean density	unknown
Surface gravity	unknown
Escape velocity	unknown
Synodic rotation period	7 h
Albedo	0.13
Temperature	unknown
Spectral type	C?
Absolute magnitude (H)	9.13

222 Lucia is a large Themistian asteroid. It is spectral C-type and is probably composed of primitive carbonaceous material.

It was discovered by Johann Palisa on February 9, 1882 in Vienna and named after Lucia, daughter of Austro-Hungarian explorer Graf Wilczek.

References

• The Asteroid Orbital Elements Database
• Minor Planet Discovery Circumstances
• Asteroid Lightcurve Data File