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Establishing Earth'...
Establishing Earth's Minimoon Population through Characterization of Asteroid 2020 CD3
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- Fedorets, Grigori (author)
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK
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- Micheli, Marco (author)
- ESA NEO Coordination Centre, Largo Galileo Galilei, 1, I-00044 Frascati (RM), Italy. INAF—Osservatorio Astronomico di Roma, Via Frascati, 33, I-00040 Monte Porzio Catone (RM), Italy
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- Jedicke, Robert (author)
- University of Hawai'i, Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
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- Naidu, Shantanu P. (author)
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
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- Farnocchia, Davide (author)
- Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, USA
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- Granvik, Mikael (author)
- Luleå tekniska universitet,Rymdteknik,Department of Physics, P.O. Box 64, FI-00014, University of Helsinki, Finland
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- Moskovitz, Nicholas (author)
- Lowell Observatory, 1400 W Mars Hill Road, Flagstaff, AZ 86001, USA
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- Schwamb, Megan E. (author)
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK
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- Weryk, Robert (author)
- University of Hawai'i, Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
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- Wierzchoś, Kacper (author)
- The University of Arizona, Lunar and Planetary Laboratory, 1629 E. University Boulevard, Tucson, AZ 85721, USA
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- Christensen, Eric (author)
- The University of Arizona, Lunar and Planetary Laboratory, 1629 E. University Boulevard, Tucson, AZ 85721, USA
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- Pruyne, Theodore (author)
- The University of Arizona, Lunar and Planetary Laboratory, 1629 E. University Boulevard, Tucson, AZ 85721, USA
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- Bottke, William F. (author)
- Department of Space Studies, Southwest Research Institute, 1050 Walnut Street, Suite 300, Boulder, CO 80302, USA
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- Ye, Quanzhi (author)
- Department of Astronomy, University of Maryland, College Park, MD 20742, USA
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- Wainscoat, Richard (author)
- University of Hawai'i, Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
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- Devogèle, Maxime (author)
- Lowell Observatory, 1400 W Mars Hill Road, Flagstaff, AZ 86001, USA. Arecibo Observatory, University of Central Florida, HC-3 Box 53995, Arecibo, PR 00612, USA
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- Buchanan, Laura E. (author)
- Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK
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- Djupvik, Anlaug Amanda (author)
- Nordic Optical Telescope, Apartado 474, E-38700 Santa Cruz de La Palma, Santa Cruz de Tenerife, Spain
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- Faes, Daniel M. (author)
- Gemini Observatory/NSF's NOIRLab, 670 N. A'ohoku Place, Hilo, HI 96720, USA
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- Föhring, Dora (author)
- University of Hawai'i, Institute for Astronomy, 2680 Woodlawn Drive, Honolulu, HI 96822, USA
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- Roediger, Joel (author)
- National Research Council of Canada, Herzberg Astronomy and Astrophysics Research Centre, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada
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- Seccull, Tom (author)
- Gemini Observatory/NSF's NOIRLab, 670 N. A'ohoku Place, Hilo, HI 96720, USA
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- Smith, Adam B. (author)
- Gemini Observatory/NSF's NOIRLab, 670 N. A'ohoku Place, Hilo, HI 96720, USA
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Astrophysics Research Centre, School of Mathematics and Physics, Queen's University Belfast, Belfast BT7 1NN, UK ESA NEO Coordination Centre, Largo Galileo Galilei, 1, I-00044 Frascati (RM), Italy INAF—Osservatorio Astronomico di Roma, Via Frascati, 33, I-00040 Monte Porzio Catone (RM), Italy (creator_code:org_t)
- 2020-11-23
- 2020
- English.
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In: Astronomical Journal. - : Institute of Physics (IOP). - 0004-6256 .- 1538-3881. ; 160:6
- Related links:
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https://ltu.diva-por... (primary) (Raw object)
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https://pureadmin.qu...
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https://urn.kb.se/re...
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https://doi.org/10.3...
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Abstract
Subject headings
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- We report on our detailed characterization of Earth's second known temporary natural satellite, or minimoon, asteroid 2020 CD3. An artificial origin can be ruled out based on its area-to-mass ratio and broadband photometry, which suggest that it is a silicate asteroid belonging to the S or V complex in asteroid taxonomy. The discovery of 2020 CD3 allows for the first time a comparison between known minimoons and theoretical models of their expected physical and dynamical properties. The estimated diameter of (+0.4, -0.2) m and geocentric capture approximately a decade after the first known minimoon, 2006 RH120, are in agreement with theoretical predictions. The capture duration of 2020 CD3 of at least 2.7 yr is unexpectedly long compared to the simulation average, but it is in agreement with simulated minimoons that have close lunar encounters, providing additional support for the orbital models. 2020 CD3's atypical rotation period, significantly longer than theoretical predictions, suggests that our understanding of meter-scale asteroids needs revision. More discoveries and a detailed characterization of the population can be expected with the forthcoming Vera C. Rubin Observatory Legacy Survey of Space and Time.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Annan elektroteknik och elektronik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Other Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)
Keyword
- Near-Earth objects
- Asteroids
- Transient sources
- Astrometry
- Broad band photometry
- Earth-moon system
- Light curves
- Orbit determination
- 1092
- 72
- 1851
- 80
- 184
- 436
- 918
- 1175
- Onboard space systems
- Rymdtekniska system
Publication and Content Type
- ref (subject category)
- art (subject category)
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Fedorets, Grigor ...
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Micheli, Marco
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Jedicke, Robert
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Naidu, Shantanu ...
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Farnocchia, Davi ...
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Granvik, Mikael
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Moskovitz, Nicho ...
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Schwamb, Megan E ...
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Weryk, Robert
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Wierzchoś, Kacpe ...
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Christensen, Eri ...
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Pruyne, Theodore
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Bottke, William ...
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Ye, Quanzhi
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Wainscoat, Richa ...
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Devogèle, Maxime
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Buchanan, Laura ...
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Djupvik, Anlaug ...
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Faes, Daniel M.
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Föhring, Dora
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Roediger, Joel
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Seccull, Tom
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Smith, Adam B.
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- ENGINEERING AND TECHNOLOGY
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ENGINEERING AND ...
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and Electrical Engin ...
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and Other Electrical ...
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Astronomical Jou ...
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Luleå University of Technology