An Updated Shape Model of Dimorphos from DART Data
Dimorphos was the target of the Double Asteroid Redirection Test (DART) mission. This paper summarizes the properties of an updated shape model of Dimorphos, describes the differences between the updated shape model and an earlier version published by Daly, Ernst, Barnouin et al. (doi: https://doi.o...
| Main Authors: | , , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Planetary Science Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/PSJ/ad0b07 |
| _version_ | 1797339366426673152 |
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| author | R. Terik Daly Carolyn M. Ernst Olivier S. Barnouin Robert W. Gaskell Hari Nair Harrison Agrusa Nancy L. Chabot Andrew F. Cheng Elisabetta Dotto Elena Mazzotta Epifani Raymond C. Espiritu Tony L. Farnham Eric E. Palmer Petr Pravec Andrew S. Rivkin Dany C. Waller Angelo Zinzi the DART and LICIACube teams |
| author_facet | R. Terik Daly Carolyn M. Ernst Olivier S. Barnouin Robert W. Gaskell Hari Nair Harrison Agrusa Nancy L. Chabot Andrew F. Cheng Elisabetta Dotto Elena Mazzotta Epifani Raymond C. Espiritu Tony L. Farnham Eric E. Palmer Petr Pravec Andrew S. Rivkin Dany C. Waller Angelo Zinzi the DART and LICIACube teams |
| author_sort | R. Terik Daly |
| collection | DOAJ |
| description | Dimorphos was the target of the Double Asteroid Redirection Test (DART) mission. This paper summarizes the properties of an updated shape model of Dimorphos, describes the differences between the updated shape model and an earlier version published by Daly, Ernst, Barnouin et al. (doi: https://doi.org/10.1038/s41586-023-05810-5 ), summarizes the data products associated with this model, and explains where the products can be accessed. The updated shape model benefited from improved methods of incorporating limb information, which will accelerate future shape modeling efforts for other objects with limited imaging data. The updated shape model is similar to the earlier model but slightly smaller (−2.8% change in volume) than the previous Dimorphos global shape model, and the updated shape is slightly more elongated. The additional analysis reported here supports an oblate preimpact shape for Dimorphos. This result indicates that the postimpact elongation of Dimorphos derived from ground-based observations is evidence for a large crater or global reshaping of the asteroid due to the DART impact. The updated global shape model of Dimorphos, as well as the earlier version, will be available in the Planetary Data System Small Bodies Node and through the public Small Body Mapping Tool. |
| first_indexed | 2024-03-08T09:45:00Z |
| format | Article |
| id | doaj.art-c94d62a63420409fb7caae0900e88652 |
| institution | Directory Open Access Journal |
| issn | 2632-3338 |
| language | English |
| last_indexed | 2024-03-08T09:45:00Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Planetary Science Journal |
| spelling | doaj.art-c94d62a63420409fb7caae0900e886522024-01-29T14:26:09ZengIOP PublishingThe Planetary Science Journal2632-33382024-01-01512410.3847/PSJ/ad0b07An Updated Shape Model of Dimorphos from DART DataR. Terik Daly0https://orcid.org/0000-0002-1320-2985Carolyn M. Ernst1https://orcid.org/0000-0002-9434-7886Olivier S. Barnouin2https://orcid.org/0000-0002-3578-7750Robert W. Gaskell3Hari Nair4Harrison Agrusa5https://orcid.org/0000-0002-3544-298XNancy L. Chabot6https://orcid.org/0000-0001-8628-3176Andrew F. Cheng7https://orcid.org/0000-0001-5375-4250Elisabetta Dotto8Elena Mazzotta Epifani9Raymond C. Espiritu10Tony L. Farnham11https://orcid.org/0000-0002-4767-9861Eric E. Palmer12https://orcid.org/0000-0001-6755-8736Petr Pravec13https://orcid.org/0000-0001-8434-9776Andrew S. Rivkin14https://orcid.org/0000-0002-9939-9976Dany C. Waller15Angelo Zinzi16https://orcid.org/0000-0001-5263-5348the DART and LICIACube teamsJohns Hopkins University Applied Physics Laboratory, USA ; Terik.Daly@jhuapl.eduJohns Hopkins University Applied Physics Laboratory, USA ; Terik.Daly@jhuapl.eduJohns Hopkins University Applied Physics Laboratory, USA ; Terik.Daly@jhuapl.eduPlanetary Science Institute , USAJohns Hopkins University Applied Physics Laboratory, USA ; Terik.Daly@jhuapl.eduUniversity of Maryland , College Park, USA; Université Côte d’Azur , Observatoire de la Côte d’Azur, CNRS, Laboratoire Lagrange, Nice, FranceJohns Hopkins University Applied Physics Laboratory, USA ; Terik.Daly@jhuapl.eduJohns Hopkins University Applied Physics Laboratory, USA ; Terik.Daly@jhuapl.eduOsservatorio Astronomico di Roma , Monte Porzio Catone, ItalyOsservatorio Astronomico di Roma , Monte Porzio Catone, ItalyJohns Hopkins University Applied Physics Laboratory, USA ; Terik.Daly@jhuapl.eduUniversity of Maryland , College Park, USAPlanetary Science Institute , USAAstronomical Institute AS CR , Ondrejov, Czech RepublicJohns Hopkins University Applied Physics Laboratory, USA ; Terik.Daly@jhuapl.eduJohns Hopkins University Applied Physics Laboratory, USA ; Terik.Daly@jhuapl.eduAgenzia Spaziale Italiana , Italy; ASI Space Science Data Center , ItalyDimorphos was the target of the Double Asteroid Redirection Test (DART) mission. This paper summarizes the properties of an updated shape model of Dimorphos, describes the differences between the updated shape model and an earlier version published by Daly, Ernst, Barnouin et al. (doi: https://doi.org/10.1038/s41586-023-05810-5 ), summarizes the data products associated with this model, and explains where the products can be accessed. The updated shape model benefited from improved methods of incorporating limb information, which will accelerate future shape modeling efforts for other objects with limited imaging data. The updated shape model is similar to the earlier model but slightly smaller (−2.8% change in volume) than the previous Dimorphos global shape model, and the updated shape is slightly more elongated. The additional analysis reported here supports an oblate preimpact shape for Dimorphos. This result indicates that the postimpact elongation of Dimorphos derived from ground-based observations is evidence for a large crater or global reshaping of the asteroid due to the DART impact. The updated global shape model of Dimorphos, as well as the earlier version, will be available in the Planetary Data System Small Bodies Node and through the public Small Body Mapping Tool.https://doi.org/10.3847/PSJ/ad0b07Asteroid surfacesNear-Earth objectsAsteroid satellitesSpace research |
| spellingShingle | R. Terik Daly Carolyn M. Ernst Olivier S. Barnouin Robert W. Gaskell Hari Nair Harrison Agrusa Nancy L. Chabot Andrew F. Cheng Elisabetta Dotto Elena Mazzotta Epifani Raymond C. Espiritu Tony L. Farnham Eric E. Palmer Petr Pravec Andrew S. Rivkin Dany C. Waller Angelo Zinzi the DART and LICIACube teams An Updated Shape Model of Dimorphos from DART Data The Planetary Science Journal Asteroid surfaces Near-Earth objects Asteroid satellites Space research |
| title | An Updated Shape Model of Dimorphos from DART Data |
| title_full | An Updated Shape Model of Dimorphos from DART Data |
| title_fullStr | An Updated Shape Model of Dimorphos from DART Data |
| title_full_unstemmed | An Updated Shape Model of Dimorphos from DART Data |
| title_short | An Updated Shape Model of Dimorphos from DART Data |
| title_sort | updated shape model of dimorphos from dart data |
| topic | Asteroid surfaces Near-Earth objects Asteroid satellites Space research |
| url | https://doi.org/10.3847/PSJ/ad0b07 |
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