Characterization of the DART Impact Ejecta Plume on Dimorphos from LICIACube Observations
We modeled the geometry and the three-dimensional orientation of the ejecta cone triggered by the impact of the DART spacecraft on the asteroid Dimorphos. We used eight LUKE images of the impact acquired by the CubeSat LICIACube that flew by the Didymos system shortly after the impact. These images,...
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| Format: | Article |
| Jezik: | English |
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IOP Publishing
2023-01-01
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| Serija: | The Planetary Science Journal |
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| Online dostop: | https://doi.org/10.3847/PSJ/ad09ba |
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| author | J. D. P. Deshapriya P. H. Hasselmann I. Gai M. Hirabayashi E. Dotto A. Rossi A. Zinzi V. Della Corte I. Bertini S. Ieva E. Mazzotta Epifani M. Dall’Ora S. Ivanovski D. Perna T. L. Farnham M. Amoroso J. R. Brucato A. Capannolo S. Caporali M. Ceresoli Nancy L. Chabot A. Cheng G. Cremonese R. T. Daly E. G. Fahnestock L. Gomez Casajus E. Gramigna G. Impresario R. Lasagni Manghi M. Lavagna J.-Y. Li M. Lombardo A. Lucchetti D. Modenini M. Pajola E. Palmer P. Palumbo S. Pirrotta G. Poggiali A. S. Rivkin P. Sanchez G. Tancredi P. Tortora F. Tusberti M. Zannoni G. Zanotti |
| author_facet | J. D. P. Deshapriya P. H. Hasselmann I. Gai M. Hirabayashi E. Dotto A. Rossi A. Zinzi V. Della Corte I. Bertini S. Ieva E. Mazzotta Epifani M. Dall’Ora S. Ivanovski D. Perna T. L. Farnham M. Amoroso J. R. Brucato A. Capannolo S. Caporali M. Ceresoli Nancy L. Chabot A. Cheng G. Cremonese R. T. Daly E. G. Fahnestock L. Gomez Casajus E. Gramigna G. Impresario R. Lasagni Manghi M. Lavagna J.-Y. Li M. Lombardo A. Lucchetti D. Modenini M. Pajola E. Palmer P. Palumbo S. Pirrotta G. Poggiali A. S. Rivkin P. Sanchez G. Tancredi P. Tortora F. Tusberti M. Zannoni G. Zanotti |
| author_sort | J. D. P. Deshapriya |
| collection | DOAJ |
| description | We modeled the geometry and the three-dimensional orientation of the ejecta cone triggered by the impact of the DART spacecraft on the asteroid Dimorphos. We used eight LUKE images of the impact acquired by the CubeSat LICIACube that flew by the Didymos system shortly after the impact. These images, which show the ejecta cone in both face-on and side-on profiles, enabled us to reconstruct the ejecta cone in inertial space. We started our model as a simple cone with a circular base and developed it to a rotated cone with an elliptical base that best fit the data. The cone axis points to R.A., decl. (in J2000): ${147}_{-10^\circ }^{+1^\circ }$ , + ${16}_{-6^\circ }^{+4^\circ }$ . The cone is characterized by two perpendicular half-angles of $\eta ={69}_{-3^\circ }^{+1^\circ },\gamma ={51}_{-11^\circ }^{+1^\circ }$ and a rotation of ω = 12° around its axis. The apex of the cone is located near the center of Dimorphos within 15 m. The intersection of the cone and the surface of Dimorphos (surface enclosed by the cone) would correspond to a crater with a maximum radius of about 65 m. The characterization of the cone axis is directly related to the computation of the momentum enhancement factor ( β ) of the impact, and it hence proves the crucial need of studying impacts in the context of planetary defence scenarios. The results of this work could potentially be used to constrain whether the impact took place in a strength-dominated or a gravity-dominated regime. This work shows the important scientific return of the LICIACube CubeSat in the context of planetary defence. |
| first_indexed | 2024-03-09T02:09:44Z |
| format | Article |
| id | doaj.art-58771d97afb44f56b30ae47dc5bc577b |
| institution | Directory Open Access Journal |
| issn | 2632-3338 |
| language | English |
| last_indexed | 2024-03-09T02:09:44Z |
| publishDate | 2023-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Planetary Science Journal |
| spelling | doaj.art-58771d97afb44f56b30ae47dc5bc577b2023-12-07T13:44:36ZengIOP PublishingThe Planetary Science Journal2632-33382023-01-0141223110.3847/PSJ/ad09baCharacterization of the DART Impact Ejecta Plume on Dimorphos from LICIACube ObservationsJ. D. P. Deshapriya0https://orcid.org/0000-0002-5758-1286P. H. Hasselmann1https://orcid.org/0000-0003-1193-8945I. Gai2M. Hirabayashi3https://orcid.org/0000-0002-1821-5689E. Dotto4A. Rossi5https://orcid.org/0000-0001-9311-2869A. Zinzi6https://orcid.org/0000-0001-5263-5348V. Della Corte7I. Bertini8S. Ieva9https://orcid.org/0000-0001-8694-9038E. Mazzotta Epifani10M. Dall’Ora11https://orcid.org/0000-0001-8209-0449S. Ivanovski12https://orcid.org/0000-0002-8068-7695D. Perna13https://orcid.org/0000-0002-4545-3850T. L. Farnham14https://orcid.org/0000-0002-4767-9861M. Amoroso15J. R. Brucato16https://orcid.org/0000-0002-4738-5521A. Capannolo17S. Caporali18M. Ceresoli19Nancy L. Chabot20https://orcid.org/0000-0001-8628-3176A. Cheng21G. Cremonese22https://orcid.org/0000-0001-9021-1140R. T. Daly23https://orcid.org/0000-0002-1320-2985E. G. Fahnestock24L. Gomez Casajus25E. Gramigna26G. Impresario27R. Lasagni Manghi28M. Lavagna29J.-Y. Li30M. Lombardo31A. Lucchetti32D. Modenini33M. Pajola34https://orcid.org/0000-0002-3144-1277E. Palmer35https://orcid.org/0000-0001-6755-8736P. Palumbo36https://orcid.org/0000-0003-2323-9228S. Pirrotta37G. Poggiali38https://orcid.org/0000-0002-3239-1697A. S. Rivkin39https://orcid.org/0000-0002-9939-9976P. Sanchez40https://orcid.org/0000-0003-3610-5480G. Tancredi41https://orcid.org/0000-0002-4943-8623P. Tortora42F. Tusberti43M. Zannoni44G. Zanotti45INAF–Osservatorio Astronomico di Roma Via Frascati 33 , I-00078 Monte Porzio Catone (Rome), Italy ; prasanna.deshapriya@inaf.itINAF–Osservatorio Astronomico di Roma Via Frascati 33 , I-00078 Monte Porzio Catone (Rome), Italy ; prasanna.deshapriya@inaf.itUniversità di Bologna , Bologna, ItalyDaniel Guggenheim School of Aerospace Engineering, Georgia Institute of Technology 620 Cherry Street , Atlanta GA 30332, USAINAF–Osservatorio Astronomico di Roma Via Frascati 33 , I-00078 Monte Porzio Catone (Rome), Italy ; prasanna.deshapriya@inaf.itCNR Istituto di Fisica Applicata “Nello Carrara,” Sesto Fiorentino (Firenze), ItalyAgenzia Spaziale Italiana , Roma, ItalyIAPS-INAF , Roma, ItalyUniversità degli Studi di Napoli “Parthenope,” Napoli, Italy; INAF Istituto di Astrofisica e Planetologia Spaziali , Roma, ItalyINAF–Osservatorio Astronomico di Roma Via Frascati 33 , I-00078 Monte Porzio Catone (Rome), Italy ; prasanna.deshapriya@inaf.itINAF–Osservatorio Astronomico di Roma Via Frascati 33 , I-00078 Monte Porzio Catone (Rome), Italy ; prasanna.deshapriya@inaf.itINAF Osservatorio Astronomico di Capodimonte , Napoli, ItalyINAF Osservatorio Astronomico di Trieste , ItalyINAF–Osservatorio Astronomico di Roma Via Frascati 33 , I-00078 Monte Porzio Catone (Rome), Italy ; prasanna.deshapriya@inaf.itUniversity of Maryland , Department of Astronomy, MD, USAAgenzia Spaziale Italiana , Roma, ItalyINAF Osservatorio Astrofisico di Arcetri , Firenze, ItalyPolitecnico di Milano , ItalyINAF Osservatorio Astrofisico di Arcetri , Firenze, ItalyPolitecnico di Milano , ItalyJohns Hopkins University Applied Physics Laboratory , Laurel, MD, USAJohns Hopkins University Applied Physics Laboratory , Laurel, MD, USAINAF Osservatorio Astronomico di Padova , ItalyJohns Hopkins University Applied Physics Laboratory , Laurel, MD, USAJet Propulsion Laboratory, California Institute of Technology 4800 Oak Grove Drive , Pasadena, CA 91109, USAUniversità di Bologna , Bologna, ItalyUniversità di Bologna , Bologna, ItalyAgenzia Spaziale Italiana , Roma, ItalyUniversità di Bologna , Bologna, ItalyPolitecnico di Milano , ItalyPlanetary Science Institute , Tucson, AZ, USAUniversità di Bologna , Bologna, ItalyINAF Osservatorio Astronomico di Padova , ItalyINAF Osservatorio Astronomico di Capodimonte , Napoli, ItalyINAF Osservatorio Astronomico di Padova , ItalyPlanetary Science Institute , Tucson, AZ, USAUniversità degli Studi di Napoli “Parthenope,” Napoli, Italy; INAF Istituto di Astrofisica e Planetologia Spaziali , Roma, ItalyAgenzia Spaziale Italiana , Roma, ItalyINAF Osservatorio Astrofisico di Arcetri , Firenze, Italy; Observatoire de Paris , FranceJohns Hopkins University Applied Physics Laboratory , Laurel, MD, USAColorado Center for Astrodynamics Research, University of Colorado Boulder 3775 Discovery Drive , Boulder, CO 80303, USADepartamento de Astronomía , Facultad de Ciencias, Iguá 4225, 11400 Montevideo, UruguayUniversità di Bologna , Bologna, ItalyINAF Osservatorio Astronomico di Padova , ItalyUniversità di Bologna , Bologna, ItalyPolitecnico di Milano , ItalyWe modeled the geometry and the three-dimensional orientation of the ejecta cone triggered by the impact of the DART spacecraft on the asteroid Dimorphos. We used eight LUKE images of the impact acquired by the CubeSat LICIACube that flew by the Didymos system shortly after the impact. These images, which show the ejecta cone in both face-on and side-on profiles, enabled us to reconstruct the ejecta cone in inertial space. We started our model as a simple cone with a circular base and developed it to a rotated cone with an elliptical base that best fit the data. The cone axis points to R.A., decl. (in J2000): ${147}_{-10^\circ }^{+1^\circ }$ , + ${16}_{-6^\circ }^{+4^\circ }$ . The cone is characterized by two perpendicular half-angles of $\eta ={69}_{-3^\circ }^{+1^\circ },\gamma ={51}_{-11^\circ }^{+1^\circ }$ and a rotation of ω = 12° around its axis. The apex of the cone is located near the center of Dimorphos within 15 m. The intersection of the cone and the surface of Dimorphos (surface enclosed by the cone) would correspond to a crater with a maximum radius of about 65 m. The characterization of the cone axis is directly related to the computation of the momentum enhancement factor ( β ) of the impact, and it hence proves the crucial need of studying impacts in the context of planetary defence scenarios. The results of this work could potentially be used to constrain whether the impact took place in a strength-dominated or a gravity-dominated regime. This work shows the important scientific return of the LICIACube CubeSat in the context of planetary defence.https://doi.org/10.3847/PSJ/ad09baAsteroids |
| spellingShingle | J. D. P. Deshapriya P. H. Hasselmann I. Gai M. Hirabayashi E. Dotto A. Rossi A. Zinzi V. Della Corte I. Bertini S. Ieva E. Mazzotta Epifani M. Dall’Ora S. Ivanovski D. Perna T. L. Farnham M. Amoroso J. R. Brucato A. Capannolo S. Caporali M. Ceresoli Nancy L. Chabot A. Cheng G. Cremonese R. T. Daly E. G. Fahnestock L. Gomez Casajus E. Gramigna G. Impresario R. Lasagni Manghi M. Lavagna J.-Y. Li M. Lombardo A. Lucchetti D. Modenini M. Pajola E. Palmer P. Palumbo S. Pirrotta G. Poggiali A. S. Rivkin P. Sanchez G. Tancredi P. Tortora F. Tusberti M. Zannoni G. Zanotti Characterization of the DART Impact Ejecta Plume on Dimorphos from LICIACube Observations The Planetary Science Journal Asteroids |
| title | Characterization of the DART Impact Ejecta Plume on Dimorphos from LICIACube Observations |
| title_full | Characterization of the DART Impact Ejecta Plume on Dimorphos from LICIACube Observations |
| title_fullStr | Characterization of the DART Impact Ejecta Plume on Dimorphos from LICIACube Observations |
| title_full_unstemmed | Characterization of the DART Impact Ejecta Plume on Dimorphos from LICIACube Observations |
| title_short | Characterization of the DART Impact Ejecta Plume on Dimorphos from LICIACube Observations |
| title_sort | characterization of the dart impact ejecta plume on dimorphos from liciacube observations |
| topic | Asteroids |
| url | https://doi.org/10.3847/PSJ/ad09ba |
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