Astron. Astrophys. Suppl. Ser. 142, 81-84
CCD observations of Phoebe,
C.H. Veiga - R. Vieira Martins - A.H. Andrei
Observatório Nacional, Rua Gal. José Cristino 77,
20921-400 Rio de Janeiro, Brazil
e-mail: email@example.com or
Received July 13; accepted November 19, 1999
Astromeric CCD positions of the Saturnian satellite Phoebe
obtained from 60 frames taken in 10 nights are presented. The observations
were distributed between 5 missions in the years 1995 to 1997. For
the astrometric calibration the USNO-A2.0 Catalogue is used. All
positions are compared with those calculated by Jacobson (1998a) and
Bec-Borsenberger & Rocher (1982). The residuals have mean and standard
deviation smaller than 0
5, in the x
distribution of residuals is suggestive of the need of an improvement
for the orbit calculations.
Key words: astrometry -- planets and satellites -- Saturn
Tables at the CDS
Copyright The European Southern Observatory (ESO)
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