11 Parthenope

ParthenopeStressed on the second syllable,  . (minor planet designation: 11 Parthenope) is a large, bright main-belt asteroid.

Parthenope was discovered by Annibale de Gasparis on 11 May 1850. It is the second of his nine asteroid discoveries. It was named after Parthenopē, who was one of the Sirens in Greek mythology. Parthenopē founded the city of Naples. Two symbols were proposed for Parthenope: a fish and a star (16x16px) and later a lyre (16x16px). Both are not used anymore.

On 6 August 2008, during a perihelic opposition, Parthenope had an apparent magnitude of 8.8.

In 1988, a UH88 telescope at the Mauna Kea Observatories looked for it, but they never found it.

It has a rotation period of 13.722 ± 0.001 hours. Its brightness is anywhere from 0.10 ± 0.0s in magnitude.

 Mass 
In 2007, Baer and Chesley discovered that it is of 6.3 kg. It had a density of 3.3 g/cm3. In 2008, it was found that it could have a mass of 6.15 instead. In 1997 and 2001, it was thought that it was 5 kg and had a density 2.7 g/cm3.

 Related pages 

 1479 Inkeri
 2191 Uppsala

 Notes 

 Other websites 

 Lightcurve plot of 11 Parthenope, Palmer Divide Observatory, B. D. Warner (2008)
 IOTA (International Occultation Timing Association) occultation database
 2011-Jan-26 Occultation / (2011 Asteroidal Occultation Results for North America)

Category:Asteroids