321 Florentina
|
A three-dimensional model of 321 Florentina based on its light curve. | |
| Discovery | |
|---|---|
| Discovered by | Johann Palisa |
| Discovery date | 15 October 1891 |
| Designations | |
| MPC designation | (321) Florentina |
| 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) | |
Average orbital speed | 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 | |
|
| |
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321 Florentina is a typical Main belt asteroid.
It was discovered by Johann Palisa on 15 October 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
- ↑ "321 Florentina". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 11 May 2016.
- ↑ Meanings of asteroid names (1-500)#301
- ↑ 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
- Lightcurve plot of 321 Florentina, Palmer Divide Observatory, B. D. Warner (1999)
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 321 Florentina at the JPL Small-Body Database
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