Detection of the Irregular Shape of the Southern Limb of Menoetius from Observations of the 2017-2018 Patroclus-Menoetius Mutual Events
| Autor: | Noemí Pinilla-Alonso, Marcel Popescu, Javier Licandro, Estela Fernández-Valenzuela, Will M. Grundy, Rene Duffard, Antonio Cabrera-Lavers, Diego Hidalgo Soto, Juan Luis Rizos, David Morate |
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| Přispěvatelé: | Ministerio de Ciencia e Innovación (España) |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
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| Popis: | This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited. This work presents the analysis of seven mutual events of the Patroclus–Menoetius system (PMS) observed during the last season of mutual events, in 2017–2018. We compare the obtained light curves with those predicted using Grundy et al. and discuss the differences in the timing of the events and the drop of magnitude. Based on models of these observations, we present a collection of orbital parameters that provide the best fit for the observed events and compare the new solutions for the orbit of the system with solutions provided in the literature. Furthermore, we also discuss an interesting finding in the light curve of the only superior event in our collection. This light curve (the one with the best signal-to-noise ratio in our data set) shows the imprint of a possible crater in the south pole of Menoetius as deep as a fourth of its radius. © 2022. The Author(s). Published by the American Astronomical Society. his work is partially based on observations made with the Gran Telescopio Canarias (GTC), in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofísica de Canarias, Spain, under Director's Discretionary Time. Partially based on observations obtained with the SARA Observatory 0.9 m telescope at Kitt Peak, which is owned and operated by the Southeastern Association for Research in Astronomy. This research is partially based on observations collected at Sierra Nevada Observatory (OSN) in Granada, Spain, which is operated by Instituto de Astrofísica de Andalucía (CSIC). This article is based on observations made with the Carlos Sánchez Telescope located at the island of Tenerife and operated by the Instituto de Astrofísica de Canarias in the Spanish Observatorio del Teide. N.P.-A. and E.F.-V. acknowledge support from SRI/FSI funds through the project "Earth- and Space-Based Studies in Support of NASA Space Missions." M.P. acknowledges support from AYA2015-67772-R (MINECO, Spain). E.F.-V. acknowledges support from the 2017 Preeminent Postdoctoral Program (P3) of the University of Central Florida. R.D. acknowledges funding from Spanish project AYA2017-89637-R, from FEDER. We would like to acknowledge financial support from the State Agency for Research of the Spanish MCIU through the "Center of Excellence Severo Ochoa award for the Instituto de Astrofísica de Andalucía" (SEV-2017-0709). We are grateful to the OSN staff for the excellent work done during the observational campaigns. |
| Databáze: | OpenAIRE |
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