321 Florentina

321 Florentina

A three-dimensional model of 321 Florentina based on its light curve.
Discovery
Discovered by	Johann Palisa
Discovery date	October 15, 1891
Designations
Minor planet category	Main belt (Koronis)
Orbital characteristics
Epoch 30 January 2005 (JD 2453400.5)
Aphelion	450.448 Gm (3.011 AU)
Perihelion	412.9 Gm (2.76 AU)
Semi-major axis	431.674 Gm (2.886 AU)
Eccentricity	0.043
Orbital period	1790.342 d (4.9 a)
Average orbital speed	17.53 km/s
Mean anomaly	3.585°
Inclination	2.594°
Longitude of ascending node	40.46°
Argument of perihelion	30.446°
Physical characteristics
Dimensions	27.0 km
Mass	unknown
Mean density	unknown
Surface gravity	unknown
Escape velocity	unknown
Rotation period	unknown
Albedo	unknown
Temperature	unknown
Spectral type	unknown
Absolute magnitude (H)	10.04

321 Florentina is a typical Main belt asteroid.

It was discovered by Johann Palisa October 15, 1891 in Vienna. He named the asteroid for his daughter, Florentina.^[1] Between 1874 and 1923, Palisa discovered a total of 122 asteroids.

A group of astronomers, including Lucy d'Escoffier Crespo da Silva, contributed data toward the discovery of spin-vector alignments in the Koronis family, which includes (321) Florentina. This was based on observations made between 1998 through 2000. The collaborative work resulted in the creation of 61 new individual rotation lightcurves to augment previous published observations.^[2]

References

1. Meanings of asteroid names (1-500)#301
2. Slivan, S. M., Binzel, R. P., Crespo da Silva, L. D., Kaasalainen, M., Lyndaker, M. M., Krco, M.: “Spin vectors in the Koronis family: comprehensive results from two independent analyses of 213 rotation lightcurves,”Icarus, 162, 2003, pp. 285-307.

External links

• 321 Florentina at the JPL Small-Body Database

• Discovery · Orbit diagram · Orbital elements · Physical parameters