Astrometric observations of Phoebe from 2010 to 2019 based on Gaia DR3

IF 2.5 2区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Icarus Pub Date : 2025-01-22 DOI:10.1016/j.icarus.2025.116457

D. Yan , R.C. Qiao , X. Cheng , H.Y. Zhang , Y. Yu

引用次数: 0

Abstract

A total of 914 positions of Phoebe were collected from 2010 to 2019 with three different telescopes, which were the 1.56 m telescope at the Sheshan station of Shanghai Astronomical Observatory, the 1.0 m telescope at the Kunming station of Yunnan Astronomical Observatory and the 2.4 m telescope at the Lijiang station of Yunnan Astronomical Observatory. Based on Gaia DR3 catalogue, all CCD observation images were reduced with the suitable plate model. We compared our observations to the theoretical positions retrieved from IMCCE ephemeris online service with satellite ephemeris of Desmars et al. (2013) model and planetary ephemeris DE441. The result shows that the mean residuals are 19 mas and 24 mas in right ascension and declination, the standard deviation of residuals are 77 mas and 67 mas in right ascension and declination. These precise observations of Phoebe over 10 year period will be important for improving the orbital parameters of Phoebe.

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来源期刊

Icarus 地学天文-天文与天体物理

CiteScore

6.30

自引率

18.80%

发文量

356

审稿时长

2-4 weeks

期刊介绍： Icarus is devoted to the publication of original contributions in the field of Solar System studies. Manuscripts reporting the results of new research - observational, experimental, or theoretical - concerning the astronomy, geology, meteorology, physics, chemistry, biology, and other scientific aspects of our Solar System or extrasolar systems are welcome. The journal generally does not publish papers devoted exclusively to the Sun, the Earth, celestial mechanics, meteoritics, or astrophysics. Icarus does not publish papers that provide "improved" versions of Bode''s law, or other numerical relations, without a sound physical basis. Icarus does not publish meeting announcements or general notices. Reviews, historical papers, and manuscripts describing spacecraft instrumentation may be considered, but only with prior approval of the editor. An entire issue of the journal is occasionally devoted to a single subject, usually arising from a conference on the same topic. The language of publication is English. American or British usage is accepted, but not a mixture of these.