Files in this item
Orbital period change of Dimorphos due to the DART kinetic impact
Item metadata
dc.contributor.author | Thomas, Cristina A. | |
dc.contributor.author | Naidu, Shantanu P. | |
dc.contributor.author | Scheirich, Peter | |
dc.contributor.author | Moskovitz, Nicholas A. | |
dc.contributor.author | Pravec, Petr | |
dc.contributor.author | Chesley, Steven R. | |
dc.contributor.author | Rivkin, Andrew S. | |
dc.contributor.author | Osip, David J. | |
dc.contributor.author | Lister, Tim A. | |
dc.contributor.author | Benner, Lance A. M. | |
dc.contributor.author | Brozović, Marina | |
dc.contributor.author | Contreras, Carlos | |
dc.contributor.author | Morrell, Nidia | |
dc.contributor.author | Rożek, Agata | |
dc.contributor.author | Kušnirák, Peter | |
dc.contributor.author | Hornoch, Kamil | |
dc.contributor.author | Mages, Declan | |
dc.contributor.author | Taylor, Patrick A. | |
dc.contributor.author | Seymour, Andrew D. | |
dc.contributor.author | Snodgrass, Colin | |
dc.contributor.author | Jørgensen, Uffe G. | |
dc.contributor.author | Dominik, Martin | |
dc.contributor.author | Skiff, Brian | |
dc.contributor.author | Polakis, Tom | |
dc.contributor.author | Knight, Matthew M. | |
dc.contributor.author | Farnham, Tony L. | |
dc.contributor.author | Giorgini, Jon D. | |
dc.contributor.author | Rush, Brian | |
dc.contributor.author | Bellerose, Julie | |
dc.contributor.author | Salas, Pedro | |
dc.contributor.author | Armentrout, William P. | |
dc.contributor.author | Watts, Galen | |
dc.contributor.author | Busch, Michael W. | |
dc.contributor.author | Chatelain, Joseph | |
dc.contributor.author | Gomez, Edward | |
dc.contributor.author | Greenstreet, Sarah | |
dc.contributor.author | Phillips, Liz | |
dc.contributor.author | Bonavita, Mariangela | |
dc.contributor.author | Burgdorf, Martin J. | |
dc.contributor.author | Khalouei, Elahe | |
dc.contributor.author | Longa-Peña, Penélope | |
dc.contributor.author | Rabus, Markus | |
dc.contributor.author | Sajadian, Sedighe | |
dc.contributor.author | Chabot, Nancy L. | |
dc.contributor.author | Cheng, Andrew F. | |
dc.contributor.author | Ryan, William H. | |
dc.contributor.author | Ryan, Eileen V. | |
dc.contributor.author | Holt, Carrie E. | |
dc.contributor.author | Agrusa, Harrison F. | |
dc.date.accessioned | 2023-08-31T23:38:06Z | |
dc.date.available | 2023-08-31T23:38:06Z | |
dc.date.issued | 2023-04-20 | |
dc.identifier | 283725472 | |
dc.identifier | d7e230e4-fc35-4929-a0d9-f4ee07a79fdc | |
dc.identifier | 85152472438 | |
dc.identifier.citation | Thomas , C A , Naidu , S P , Scheirich , P , Moskovitz , N A , Pravec , P , Chesley , S R , Rivkin , A S , Osip , D J , Lister , T A , Benner , L A M , Brozović , M , Contreras , C , Morrell , N , Rożek , A , Kušnirák , P , Hornoch , K , Mages , D , Taylor , P A , Seymour , A D , Snodgrass , C , Jørgensen , U G , Dominik , M , Skiff , B , Polakis , T , Knight , M M , Farnham , T L , Giorgini , J D , Rush , B , Bellerose , J , Salas , P , Armentrout , W P , Watts , G , Busch , M W , Chatelain , J , Gomez , E , Greenstreet , S , Phillips , L , Bonavita , M , Burgdorf , M J , Khalouei , E , Longa-Peña , P , Rabus , M , Sajadian , S , Chabot , N L , Cheng , A F , Ryan , W H , Ryan , E V , Holt , C E & Agrusa , H F 2023 , ' Orbital period change of Dimorphos due to the DART kinetic impact ' , Nature , vol. 616 , pp. 448-451 . https://doi.org/10.1038/s41586-023-05805-2 | en |
dc.identifier.issn | 0028-0836 | |
dc.identifier.other | ArXiv: http://arxiv.org/abs/2303.02077v1 | |
dc.identifier.other | ORCID: /0000-0002-3202-0343/work/131123474 | |
dc.identifier.uri | https://hdl.handle.net/10023/28281 | |
dc.description | Funding: U.G.J. acknowledges funding from the Novo Nordisk Foundation Interdisciplinary Synergy Programme grant no. NNF19OC0057374, and from the European Union H2020-MSCA-ITN-2019 grant no. 860470 (CHAMELEON). E.K. is supported by the National Research Foundation of Korea 2021M3F7A1082056. P.L.P. was partly funded by “Programa de Iniciación en Investigación-Universidad de Antofagasta. INI-17-03". | en |
dc.description.abstract | The Double Asteroid Redirection Test (DART) spacecraft successfully performed the first test of a kinetic impactor for asteroid deflection by impacting Dimorphos, the secondary of near-Earth binary asteroid (65803) Didymos, and changing the orbital period of Dimorphos. A change in orbital period of approximately 7 minutes was expected if the incident momentum from the DART spacecraft was directly transferred to the asteroid target in a perfectly inelastic collision, but studies of the probable impact conditions and asteroid properties indicated that a considerable momentum enhancement (β) was possible. In the years prior to impact, we used lightcurve observations to accurately determine the pre-impact orbit parameters of Dimorphos with respect to Didymos. Here we report the change in the orbital period of Dimorphos as a result of the DART kinetic impact to be -33.0±1.0 (3σ) minutes. Using new Earth-based lightcurve and radar observations, two independent approaches determined identical values for the change in the orbital period. This large orbit period change suggests that ejecta contributed a significant amount of momentum to the asteroid beyond what the DART spacecraft carried. | |
dc.format.extent | 2785102 | |
dc.language.iso | eng | |
dc.relation.ispartof | Nature | en |
dc.subject | QB Astronomy | en |
dc.subject | QC Physics | en |
dc.subject | 3rd-DAS | en |
dc.subject | MCC | en |
dc.subject.lcc | QB | en |
dc.subject.lcc | QC | en |
dc.title | Orbital period change of Dimorphos due to the DART kinetic impact | en |
dc.type | Journal article | en |
dc.contributor.sponsor | European Commission | en |
dc.contributor.institution | University of St Andrews. School of Physics and Astronomy | en |
dc.contributor.institution | University of St Andrews. St Andrews Centre for Exoplanet Science | en |
dc.identifier.doi | https://doi.org/10.1038/s41586-023-05805-2 | |
dc.description.status | Peer reviewed | en |
dc.date.embargoedUntil | 2023-09-01 | |
dc.identifier.url | https://arxiv.org/abs/2303.02077 | en |
dc.identifier.grantnumber | 860470 | en |
This item appears in the following Collection(s)
Items in the St Andrews Research Repository are protected by copyright, with all rights reserved, unless otherwise indicated.