Re-determination of Phoebe's orbit

Shen, Kongchao; Harper, David; Qiao, R.; Dourneau, G.; Liu, J. R.

doi:10.1051/0004-6361:20052728

Cited by 10 publications

(20 citation statements)

References 16 publications

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“…We compared our observations to three recent ephemerides by Jacobson (2004b), Shen et al (2005), and Arlot et al (2003). First, we confirmed the high level of accuracy of the JPL ephemeris by Jacobson (2004b), giving positions with errors generally lower than 0.…”

Section: Resultssupporting

confidence: 68%

“…The second ephemeris that we used to compare our observations to is derived from the orbit recently re-determined by Shen et al (2005). It was obtained from a numerically integrated fit of the motion of Phoebe to a large set of old ground-based obser- The calculation of this orbit is based on an integration program from Harper (1993), which is a 12-order Runge-Kutta-Nystrom numerical integration with a variable step size.…”

Section: The Orbit Of Phoebe By Shen Et Al (2005)mentioning

confidence: 99%

“…A complete analytical model, which is similar to those previously used by Taylor & Shen (1988) and by Harper & Taylor (2003), is employed for computing the perturbations by Titan. Shen et al (2005) have evaluated the accuracy of their new orbit to about 90 mas for the recent period.…”

Section: The Orbit Of Phoebe By Shen Et Al (2005)mentioning

confidence: 99%

“…This orbit has been fitted to the same Earth-based astrometric observations that Shen et al (2005) used, excluding our December 2003 observations presented in this paper. Therefore, both of these orbits should have a comparable accuracy.…”

Section: A Model For Phoebe From the Imccementioning

confidence: 99%

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CCD astrometric observations of Phoebe in 2003–2004

Qiao

Tang

Shen³

et al. 2006

A&A

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In 2003-2004, we obtained 115 new observations of Phoebe, the 9th Saturnian faint satellite (visual magnitude of about 16.5). We used a large CCD detector (2048 × 2048 pixels) mounted on the 1.56 m astrometric reflector at the Sheshan Station, near Shanghai. In our reduction, an up-to-date catalogue of stars, UCAC2 (Zacharias et al. 2004), was chosen to ensure a proper astrometric calibration. A comparison of our observations to three recently available, high quality ephemerides, including the JPL SAT185 by Jacobson (2004b), has shown that most of our observed positions of Phoebe present an accuracy of some tens of mas, which appears to be a very high level for such a faint satellite.

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Section: Resultssupporting

confidence: 68%

Section: The Orbit Of Phoebe By Shen Et Al (2005)mentioning

confidence: 99%

Section: The Orbit Of Phoebe By Shen Et Al (2005)mentioning

confidence: 99%

Section: A Model For Phoebe From the Imccementioning

confidence: 99%

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CCD astrometric observations of Phoebe in 2003–2004

Qiao

Tang

Shen³

et al. 2006

A&A

Self Cite

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“…The most recent papers have made use of CCD observations for the redetermination of Phoebe's orbit (Arlot et al 2003;Shen et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Updated ephemeris of Phoebe, ninth satellite of Saturn

Emel'Yanov

2007

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Context. The theoretical model of natural satellite motion may need improvement each time new observations of a considerable amount are accumulated over a significant time interval. Aims. The goal of our work is to elaborate the ephemeris of Phoebe based on all ground-based observations available to date and readily accessible for any user via the Internet. Methods. Our model for the orbit of Phoebe is based on numerical integration of the equations of motion. In the theory of satellite motion, all necessary perturbations were taken into account. To produce the ephemeris of Phoebe, we used a database that contains all published ground-based observations and expands constantly as new observations appear. Results. The new ephemeris of Phoebe, based on 1606 ground-based observations made at 39 observatories in the 103 year time interval, was elaborated. The real precision of the ephemeris is limited by the observational precision and is not worse than 0.15 . The ephemeris is available at: http://www.imcce.fr/sat and http://www.sai.msu.ru/neb/nss/index.htm. The ephemeris of Phoebe will be updated as new observations become available.

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Complementary astrometry of Cassini Imaging Science Subsystem images of Phoebe

Zhang

Qin

et al. 2022

Planetary and Space Science

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Re-determination of Phoebe's orbit

Cited by 10 publications

References 16 publications

CCD astrometric observations of Phoebe in 2003–2004

CCD astrometric observations of Phoebe in 2003–2004

Updated ephemeris of Phoebe, ninth satellite of Saturn

Complementary astrometry of Cassini Imaging Science Subsystem images of Phoebe

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