The first observed stellar occultations by the irregular satellite Phoebe (Saturn IX) and improved rotational period

A. R. Gomes-Júnior,M. Assafin,F. Braga-Ribas,G. Benedetti-Rossi,B. E. Morgado,J. I. B. Camargo,R. Vieira-Martins,J. Desmars,B. Sicardy, T. Barry, J. Campbell-White, E. Fernández-Lajús, D. Giles,W. Hanna, T. Hayamizu, T. Hirose,A. De Horta, R. Horvat, K. Hosoi,Emmanuel Jehin,S. Kerr, D. I. Machado, L. A. Mammana, D. Maybour, M. Owada,S. Rahvar,C. Snodgrass

Monthly Notices of the Royal Astronomical Society（2020）

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摘要

We report six stellar occultations by Phoebe (Saturn IX), an irregular satellite of Saturn, obtained between mid-2017 and mid-2019. The 2017 July 6 event was the first stellar occultation by an irregular satellite ever observed. The occultation chords were compared to a 3D shape model of the satellite obtained from Cassini observations. The rotation period available in the literature led to a sub-...

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关键词

occultations,planets and satellites: individual: Phoebe

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