VizieR Online Data Catalog: Astrometry of Cassini ISS Images of Phoebe (Zhang+, 2022)

We provide astrometric observations of the Saturnian satellites Phoebe from Cassini Imaging Science Subsystem (ISS) narrow-angle camera (NAC) images. All 834 observations of Phoebe taken over 5 years (2004-2007, 2015). Observation residuals were compared to JPL ephemerides SAT375, showing that the observation error is about 11 kilometers.

This table contains 834 positions of the Saturnian satellites Phoebe from Cassini ISS NAC images that were taken 2004-2007 and in 2015. The camera's field of view is ~0.35°, and its resolution is ~1.2354-arcsec/pixel when the NAC image size is 1024x1024-pixel or ~2.708-arcsec/pixel when 512x512-pixel. Positions of Phoebe are provided in both right ascension and declination, and in image coordinates. The NAC's pointing vector is also shown. Positions are given in International Celestial Reference Frame (ICRF), centered on the Cassini spacecraft. The origin of the line, sample coordinate system is at the top left of the image, "Line" is y-axis and increases downward; "sample" is x-axis, to the right. In additional, the positions of Phoebe before phase correction are also provided, and the filter combinations used by NAC are listed.

(1 data file).