Orbit of the Patroclus–Menoetius Binary System and Predictions for the 2024/2025 Mutual Events Season Article Swipe
M. Brozović
,
Robert A. Jacobson
,
Ryan S. Park
,
Pascal Descamps
,
J. Berthier
,
N. Pinilla-Alonso
,
Marcel Popescu
,
J. Licandro
·
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.3847/1538-3881/ad1f6e
YOU?
·
· 2024
· Open Access
·
· DOI: https://doi.org/10.3847/1538-3881/ad1f6e
We report on the ephemeris development for Menoetius, the satellite of Patroclus. Our data set consisted of ground–based and Hubble Space Telescope relative astrometry, as well as 42 lightcurves from the mutual events seasons in 2007, 2012, and 2017/2018. Our dynamical model included the effects of oblate, nonspherical shapes of the components, and we assumed that Menoetius contained ∼22% of the system’s mass. We numerically integrated the equations of motion and obtained a set of dynamical parameters that fit the data. We report the fit results in terms of residuals, state vectors, orbital elements and their 1 σ uncertainties. The mean osculating semimajor axis is a = 692.5 ± 4.0 km, the mean eccentricity is e = 0.004 ± 0.004, and the International Celestial Reference Frame pole direction in R.A. and decl. is R. A. = 178.0 ± 0.5 deg, δ = −74.1 ± 0.2 deg. We determined the siderial orbital period of P = 4.282753 ± 0.000023 days. The fit yielded the system GM = 0.0950 ± 0.0012 km 3 s −2 , which, in combination with the system volume determined from the stellar occultation and the assumed volume uncertainty of 20%, suggests a system bulk density of 1.05 ± 0.21 g cm −3 (1 σ ). The next season of mutual events starts in February of 2024 and lasts until January of 2025. The Patroclus system is in opposition for the observers on Earth in late September and is suitable for observations of the mutual events with an edge-on geometry in October.
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- Type
- article
- Language
- en
- Landing Page
- https://doi.org/10.3847/1538-3881/ad1f6e
- https://iopscience.iop.org/article/10.3847/1538-3881/ad1f6e/pdf
- OA Status
- gold
- References
- 17
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4391785448
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- OpenAlex ID
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https://openalex.org/W4391785448Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.3847/1538-3881/ad1f6eDigital Object Identifier
- Title
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Orbit of the Patroclus–Menoetius Binary System and Predictions for the 2024/2025 Mutual Events SeasonWork title
- Type
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articleOpenAlex work type
- Language
-
enPrimary language
- Publication year
-
2024Year of publication
- Publication date
-
2024-02-13Full publication date if available
- Authors
-
M. Brozović, Robert A. Jacobson, Ryan S. Park, Pascal Descamps, J. Berthier, N. Pinilla-Alonso, Marcel Popescu, J. LicandroList of authors in order
- Landing page
-
https://doi.org/10.3847/1538-3881/ad1f6ePublisher landing page
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https://iopscience.iop.org/article/10.3847/1538-3881/ad1f6e/pdfDirect link to full text PDF
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YesWhether a free full text is available
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goldOpen access status per OpenAlex
- OA URL
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https://iopscience.iop.org/article/10.3847/1538-3881/ad1f6e/pdfDirect OA link when available
- Concepts
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Physics, Orbit (dynamics), Binary number, Astronomy, Astrophysics, Astrobiology, Aerospace engineering, Mathematics, Arithmetic, EngineeringTop concepts (fields/topics) attached by OpenAlex
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0Total citation count in OpenAlex
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10Other works algorithmically related by OpenAlex
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