Masses of binary asteroid systems with strong solar perturbations

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

Icarus Pub Date : 2025-03-17 DOI:10.1016/j.icarus.2025.116546

M.I. Varfolomeev , N.V. Emelyanov

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引用次数: 0

Abstract

We give refined values for the masses for the following binary asteroid systems with strong solar perturbations: (379) Huenna, (3548) Eurybates-Queta, (3749) Balam, (88611) Teharonhiawako-Sawiskera, (160256) 2002 PD₁₄₉, (341520) Mors-Somnus, (364171) 2006 JZ₈₁, (524531) 2002 XH₉₁, 1998 WW₃₁, and 2003 QY₉₀. The masses were refined by numeric integration of the equations of motion where perturbations from the Sun’s gravity were taken into account. Assuming the satellite orbits to be close to Keplerian, the initial integration parameters and the masses of the systems can be refined by the least-squares method in which the coefficients of the conditional equations are calculated using the Keplerian motion formulae. For some systems with strong solar perturbations (2001 QW₃₂₂, 2006 BR₂₈₄, 2006 CH₆₉, (525462) 2005 EO₃₀₄, (612147) 2000 CF₁₀₅, (612687) 2003 UN₂₈₄) the masses could not be refined since the rms residuals increase when solar perturbations are taken into account, which can be caused by insufficient interval or amount of observations. For most systems, the obtained values for masses are within the error limits of the values obtained using only Keplerian model. However, for a number of satellites, the Keplerian model of motion, which does not take into account solar perturbations, gives significant deviations in the apparent positions exceeding the accuracy of modern observations. These systems are (379) Huenna, (3548) Eurybates-Queta, (3749) Balam, (160256) 2002 PD₁₄₉, and (364171) 2006 JZ₈₁. For the systems for which it was possible to refine the masses, we give elements of their satellites’ osculating orbits for the epoch close to the date of their first observation.

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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.