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Implications for the Formation of (155140) 2005 UD from a New Convex Shape Model

Kueny, Jay K. (författare)
Lowell Observatory, 1400 W. Mars Hill Rd., Flagstaff, AZ 86001, USA; Steward Observatory, University of Arizona, Tucson, 933 N. Cherry Avenue, Tucson, AZ 85721, USA; Wyant College of Optical Sciences, University of Arizona, 1630 E. University Boulevard, Tucson, AZ 85721, USA
Chandler, Colin Orion (författare)
Department of Astronomy and Planetary Science, Northern Arizona University, PO Box 6010, Flagstaff, AZ 86011, USA; Dept. of Astronomy & the DiRAC Institute, University of Washington, 3910 15th Avenue NE, Seattle, WA 98195, USA
Devogéle, Maxime (författare)
Arecibo Observatory, University of Central Florida, HC-3 Box 53995, Arecibo, PR 00612, USA
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Moskovitz, Nicholas (författare)
Lowell Observatory, 1400 W. Mars Hill Rd., Flagstaff, AZ 86001, USA
Pravec, Petr (författare)
Astronomical Institute, Academy of Sciences of the Czech Republic, Fričova 1, CZ-25165 Ondřejov, Czech Republic
Kučáková, Hana (författare)
Astronomical Institute, Academy of Sciences of the Czech Republic, Fričova 1, CZ-25165 Ondřejov, Czech Republic; Institute of Astronomy, Faculty of Mathematics and Physics, Charles University, V Holešovickách 2, 18000 Prague, Czech Republic; Research Centre for Theoretical Physics and Astrophysics, Institute of Physics, Silesian University in Opava, Bezručovo nám. 13, 74601 Opava, Czech Republic
Hornoch, Kamil (författare)
Astronomical Institute, Academy of Sciences of the Czech Republic, Fričova 1, CZ-25165 Ondřejov, Czech Republic
Kušnirák, Peter (författare)
Astronomical Institute, Academy of Sciences of the Czech Republic, Fričova 1, CZ-25165 Ondřejov, Czech Republic
Granvik, Mikael (författare)
Luleå tekniska universitet,Rymdteknik,Department of Physics, P.O. Box 64, FI-00014 University of Helsinki, Finland,Space systems
Konstantopoulou, Christina (författare)
Department of Astronomy, University of Geneva, Chemin Pegasi 51, 1290 Versoix, Switzerland; Nordic Optical Telescope, Apartado 474, E-38700 Santa Cruz de La Palma, Spain
Jannsen, Nicholas E. (författare)
Nordic Optical Telescope, Apartado 474, E-38700 Santa Cruz de La Palma, Spain; Institute of Astronomy, Celestijnenlaan 200D bus 2401, B-3001 Leuven, Belgium
Moran, Shane (författare)
Nordic Optical Telescope, Apartado 474, E-38700 Santa Cruz de La Palma, Spain; Department of Physics and Astronomy, University of Turku, Vesilinnantie 5, FI-20500, Finland
Siltala, Lauri (författare)
Department of Physics, P.O. Box 64, FI-00014 University of Helsinki, Finland
Fedorets, Grigori (författare)
Department of Physics, P.O. Box 64, FI-00014 University of Helsinki, Finland; Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK
Ferrais, Marin (författare)
Space sciences, Technologies & Astrophysics Research (STAR) Institute University of Liège Allée du 6 Aohat ut 19, B-4000 Liège, Belgium; Aix Marseille Univ, CNRS, LAM, Laboratoire d'Astrophysique de Marseille, Marseille, France
Jehin, Emmanuel (författare)
Space sciences, Technologies & Astrophysics Research (STAR) Institute University of Liège Allée du 6 Aohat ut 19, B-4000 Liège, Belgium
Kareta, Theodore (författare)
Lowell Observatory, 1400 W. Mars Hill Rd., Flagstaff, AZ 86001, USA
Hanuš, Josef (författare)
Institute of Astronomy, Faculty of Mathematics and Physics, Charles University, V Holešovickách 2, 18000 Prague, Czech Republic
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Lowell Observatory, 1400 W Mars Hill Rd., Flagstaff, AZ 86001, USA; Steward Observatory, University of Arizona, Tucson, 933 N. Cherry Avenue, Tucson, AZ 85721, USA; Wyant College of Optical Sciences, University of Arizona, 1630 E. University Boulevard, Tucson, AZ 85721, USA Department of Astronomy and Planetary Science, Northern Arizona University, PO Box 6010, Flagstaff, AZ 86011, USA; Dept. of Astronomy & the DiRAC Institute, University of Washington, 3910 15th Avenue NE, Seattle, WA 98195, USA (creator_code:org_t)
2023-03-31
2023
Engelska.
Ingår i: The Planetary Science Journal. - : Institute of Physics (IOP). - 2632-3338. ; 4:3
Relaterad länk:
https://doi.org/10.3...
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https://ltu.diva-por... (primary) (Raw object)
https://urn.kb.se/re...
https://doi.org/10.3...
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  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • (155140) 2005 UD has a similar orbit to (3200) Phaethon, an active asteroid in a highly eccentric orbit thought to be the source of the Geminid meteor shower. Evidence points to a genetic relationship between these two objects, but we have yet to fully understand how 2005 UD and Phaethon could have separated into this associated pair. Presented herein are new observations of 2005 UD from five observatories that were carried out during the 2018, 2019, and 2021 apparitions. We implemented light curve inversion using our new data, as well as dense and sparse archival data from epochs in 2005–2021, to better constrain the rotational period and derive a convex shape model of 2005 UD. We discuss two equally well-fitting pole solutions (λ = 116 6, β = −53 6) and (λ = 300 3, β = −55 4), the former largely in agreement with previous thermophysical analyses and the latter interesting due to its proximity to Phaethon's pole orientation. We also present a refined sidereal period of Psid = 5.234246 ± 0.000097 hr. A search for surface color heterogeneity showed no significant rotational variation. An activity search using the deepest stacked image available of 2005 UD near aphelion did not reveal a coma or tail but allowed modeling of an upper limit of 0.04–0.37 kg s−1 for dust production. We then leveraged our spin solutions to help limit the range of formation scenarios and the link to Phaethon in the context of nongravitational forces and timescales associated with the physical evolution of the system.

Ämnesord

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

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Onboard Space Systems
Rymdtekniska system

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