1. CCD Astrometric Observations of Phoebe in 2005-2008
- Author
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Qiao, R. C., Xi, X. J., Dourneau, G., Shen, K. X., Cheng, X., Tang, Z. H., Wang, S. H., Zhang, H. Y., National Time Service Center, Chinese Academy of Sciences [Beijing] (CAS), United Laboratory for Optical Astrometry, Observatoire aquitain des sciences de l'univers (OASU), Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Astrophysique de Bordeaux [Pessac] (LAB), Université de Bordeaux (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'astrodynamique, d'astrophysique et d'aéronomie de bordeaux (L3AB), Université Sciences et Technologies - Bordeaux 1, EAST CHINA UNIVERSITY, KEY LAB, and Shanghai Astronomical Observatory [Shanghai] (SHAO)
- Subjects
[PHYS.ASTR.GA]Physics [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA] ,planets and satellites: general ,Astrometry ,[SDU.ASTR.GA]Sciences of the Universe [physics]/Astrophysics [astro-ph]/Galactic Astrophysics [astro-ph.GA] - Abstract
International audience; Astrometric observations of Phoebe, the ninth faint satellite of Saturn with vi-sual magnitude of 16.5, were performed during the four successive 2005, 2006, 2007 and 2008 oppositions. A very important amount of 1173 new observed positions of Phoebe, representing more than 50 percent of the observational data available now, were obtained during 30 nights of observation involving six missions, by using three different telescopes. The comparison of our observed positions with the JPL Phoebe ephemeris shows the high quality of our observations, as they appear to be consistent with this ephemeris within only about 50 mas.
- Published
- 2011