321 Florentina

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321 Florentina
321Florentina (Lightcurve Inversion).png
A three-dimensional model of 321 Florentina based on its light curve.
Discovery
Discovered by Johann Palisa
Discovery date 15 October 1891
Designations
Main belt (Koronis)
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 118.15 yr (43153 d)
Aphelion 3.01879 AU (451.605 Gm)
Perihelion 2.7543 AU (412.04 Gm)
2.88657 AU (431.825 Gm)
Eccentricity 0.045806
4.90 yr (1791.3 d)
17.53 km/s
120.99°
0° 12m 3.492s / day
Inclination 2.5876°
40.224°
37.310°
Earth MOID 1.76843 AU (264.553 Gm)
Jupiter MOID 2.0991 AU (314.02 Gm)
Jupiter Tisserand parameter 3.289
Physical characteristics
Dimensions 27.23±1.5 km
Mass unknown
Mean density
unknown
Equatorial surface gravity
unknown
Equatorial escape velocity
unknown
2.871 h (0.1196 d)
0.2296±0.028
Temperature unknown
unknown
10.1

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.[2] 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.[3]

References[edit]

  1. ^ "321 Florentina". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016. 
  2. ^ Meanings of asteroid names (1-500)#301
  3. ^ 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[edit]