SHEN, K. X.; HARPER, D.; QIAO, R. C.; DOURNEAU, G.; LIU, J. R.

doi:10.1051/0004-6361:20052728

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SHEN, K. X.
National Time Service Center

HARPER, D.
The Wellcome Trust Sanger Institute [Cambridge]

QIAO, R. C.
National Time Service Center
United Laboratory for Optical Astrometry

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Astronomy and Astrophysics - A&A. 2005, vol. 437, p. 1109-1113

EDP Sciences

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In order to improve the orbit of Phoebe, the ninth satellite of the Saturnian system, 101 new observations were made by our research team in 2003, using a CCD detector of large size (2048×2048 pixels) mounted on the 1.56 m astrometric reflector at the Sheshan Station of Shanghai Astronomical Observatory. We fitted a numerical integration of its orbit to all of the collected Earth-based astrometric observations from 1904 to 2003, including the newest precise data sets from Qiao & Tang and from Peng et al. A new set of initial conditions of Phoebe has been obtained, leading to an improved orbit of this satellite.< Réduire

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gravitation

ephemerides

methods: numerical

reference systems

astrometry

time

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Re-determination of Phoebe's orbit

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