Thermophysical Model of (269) Justitia—Main Belt Asteroid Possibly Implanted from Trans-Neptunian Region
Asteroid Justitia is a special main-belt object, being an extremely red body with a steeper spectral slope than any other D-type asteroid. Conversely, its spectral and polarimetric properties resemble organics-rich Centaurs and trans-Neptunian objects. For this reason, it was chosen as a main target...
Saved in:
| Main Authors: | , , , , , , , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | The Planetary Science Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/PSJ/adb28b |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849395172544086016 |
|---|---|
| author | Anna Marciniak Antoine Choukroun Julia Perła Waldemar Ogłoza Robert Szakáts Pierre Antonini Raoul Behrend Géza Csörnyei Marek Dróżdż Marcel Fauvaud Stéphane Fauvaud Adrian Jones Dong-Heun Kim Myung-Jin Kim Viktor Kudak Iga Mieczkowska Erika Pakštienė Vasyl Perig Eda Sonbas |
| author_facet | Anna Marciniak Antoine Choukroun Julia Perła Waldemar Ogłoza Robert Szakáts Pierre Antonini Raoul Behrend Géza Csörnyei Marek Dróżdż Marcel Fauvaud Stéphane Fauvaud Adrian Jones Dong-Heun Kim Myung-Jin Kim Viktor Kudak Iga Mieczkowska Erika Pakštienė Vasyl Perig Eda Sonbas |
| author_sort | Anna Marciniak |
| collection | DOAJ |
| description | Asteroid Justitia is a special main-belt object, being an extremely red body with a steeper spectral slope than any other D-type asteroid. Conversely, its spectral and polarimetric properties resemble organics-rich Centaurs and trans-Neptunian objects. For this reason, it was chosen as a main target of the MBR Explorer space mission. It is crucial for space mission planning and operations to have in advance the best estimate of the target size, spin, shape, and properties of the surface. In particular, the size determination was in high demand before the extensive stellar occultation campaign in 2023 August, for station deployment and observation planning. We utilized multiple lightcurves from our campaign on slow rotators and from the literature to reconstruct the spin and shape of Justitia via lightcurve inversion. Then we applied the Convex Inversion Thermophysical Model to simultaneously optimize the fit to visible lightcurves and to thermal data from infrared space observatories. We present here the pair of most precise physical models of Justitia possible before the occultation campaign, with similar properties of both solutions. The size range of Justitia was narrowed here to 55–60 km, so by a factor of 4 compared with previous estimates, and also the shape model's resolution was improved. An estimate of thermal inertia and surface roughness was also obtained, with implications for surface texture and regolith properties. |
| format | Article |
| id | doaj-art-a8a985ddb854493fa2d0e73e4a87feb7 |
| institution | Kabale University |
| issn | 2632-3338 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Planetary Science Journal |
| spelling | doaj-art-a8a985ddb854493fa2d0e73e4a87feb72025-08-20T03:39:44ZengIOP PublishingThe Planetary Science Journal2632-33382025-01-01636010.3847/PSJ/adb28bThermophysical Model of (269) Justitia—Main Belt Asteroid Possibly Implanted from Trans-Neptunian RegionAnna Marciniak0Antoine Choukroun1Julia Perła2Waldemar Ogłoza3Robert Szakáts4Pierre Antonini5Raoul Behrend6Géza Csörnyei7Marek Dróżdż8Marcel Fauvaud9Stéphane Fauvaud10Adrian Jones11Dong-Heun Kim12Myung-Jin Kim13Viktor Kudak14Iga Mieczkowska15Erika Pakštienė16Vasyl Perig17Eda Sonbas18Astronomical Observatory Institute, Faculty of Physics and Astronomy, Adam Mickiewicz University , Słoneczna 36, 60-286 Poznań, PolandAstronomical Observatory Institute, Faculty of Physics and Astronomy, Adam Mickiewicz University , Słoneczna 36, 60-286 Poznań, PolandAstronomical Observatory Institute, Faculty of Physics and Astronomy, Adam Mickiewicz University , Słoneczna 36, 60-286 Poznań, PolandMount Suhora Observatory, University of the National Education Commission, Podchorążych 2, 30-084, Cracow, PolandKonkoly Observatory, HUN-REN Research Centre for Astronomy and Earth Sciences , Konkoly Thege 15-17, H-1121 Budapest, Hungary; CSFK, MTA Centre of Excellence , Budapest, Konkoly Thege Miklós út 15-17, H-1121, HungaryGeneva Observatory , CH-1290 Sauverny, SwitzerlandGeneva Observatory , CH-1290 Sauverny, SwitzerlandKonkoly Observatory, Research Centre for Astronomy and Earth Sciences , Eötvös Loránd Research Network (ELKH), H-1121 Budapest, Konkoly Thege Miklós út 15-17, HungaryMount Suhora Observatory, University of the National Education Commission, Podchorążych 2, 30-084, Cracow, PolandObservatoire du Bois de Bardon , 16110 Taponnat, France; Association T60, Observatoire Midi-Pyrénées , 14, avenue Edouard Belin, 31400 Toulouse, FranceObservatoire du Bois de Bardon , 16110 Taponnat, France; Association T60, Observatoire Midi-Pyrénées , 14, avenue Edouard Belin, 31400 Toulouse, FranceBritish Astronomical Association , Burlington House, Piccadilly, Mayfair, W1J 0DU, London, UKChungbuk National University , 1, Chungdae-ro, Seowon-gu, Cheongju-si, Chungcheongbuk-do, Republic of KoreaKorea Astronomy and Space Science Institute , 776 Daedeok-daero, Yuseong-gu, Daejeon 34055, Republic of KoreaLaboratory of Space Researches, Uzhhorod National University , Daleka st. 2a, 88000, Uzhhorod, UkraineAstronomical Observatory Institute, Faculty of Physics and Astronomy, Adam Mickiewicz University , Słoneczna 36, 60-286 Poznań, PolandInstitute of Theoretical Physics and Astronomy, Vilnius University , Saulėtekio al. 3, 10257 Vilnius, LithuaniaLaboratory of Space Researches, Uzhhorod National University , Daleka st. 2a, 88000, Uzhhorod, UkraineDepartment of Physics, Adıyaman University , Adıyaman 02040, Türkiye; Astrophysics Application and Research Center, Adıyaman University , Adıyaman 02040, TürkiyeAsteroid Justitia is a special main-belt object, being an extremely red body with a steeper spectral slope than any other D-type asteroid. Conversely, its spectral and polarimetric properties resemble organics-rich Centaurs and trans-Neptunian objects. For this reason, it was chosen as a main target of the MBR Explorer space mission. It is crucial for space mission planning and operations to have in advance the best estimate of the target size, spin, shape, and properties of the surface. In particular, the size determination was in high demand before the extensive stellar occultation campaign in 2023 August, for station deployment and observation planning. We utilized multiple lightcurves from our campaign on slow rotators and from the literature to reconstruct the spin and shape of Justitia via lightcurve inversion. Then we applied the Convex Inversion Thermophysical Model to simultaneously optimize the fit to visible lightcurves and to thermal data from infrared space observatories. We present here the pair of most precise physical models of Justitia possible before the occultation campaign, with similar properties of both solutions. The size range of Justitia was narrowed here to 55–60 km, so by a factor of 4 compared with previous estimates, and also the shape model's resolution was improved. An estimate of thermal inertia and surface roughness was also obtained, with implications for surface texture and regolith properties.https://doi.org/10.3847/PSJ/adb28bAsteroidsAsteroid surfacesAsteroid rotation |
| spellingShingle | Anna Marciniak Antoine Choukroun Julia Perła Waldemar Ogłoza Robert Szakáts Pierre Antonini Raoul Behrend Géza Csörnyei Marek Dróżdż Marcel Fauvaud Stéphane Fauvaud Adrian Jones Dong-Heun Kim Myung-Jin Kim Viktor Kudak Iga Mieczkowska Erika Pakštienė Vasyl Perig Eda Sonbas Thermophysical Model of (269) Justitia—Main Belt Asteroid Possibly Implanted from Trans-Neptunian Region The Planetary Science Journal Asteroids Asteroid surfaces Asteroid rotation |
| title | Thermophysical Model of (269) Justitia—Main Belt Asteroid Possibly Implanted from Trans-Neptunian Region |
| title_full | Thermophysical Model of (269) Justitia—Main Belt Asteroid Possibly Implanted from Trans-Neptunian Region |
| title_fullStr | Thermophysical Model of (269) Justitia—Main Belt Asteroid Possibly Implanted from Trans-Neptunian Region |
| title_full_unstemmed | Thermophysical Model of (269) Justitia—Main Belt Asteroid Possibly Implanted from Trans-Neptunian Region |
| title_short | Thermophysical Model of (269) Justitia—Main Belt Asteroid Possibly Implanted from Trans-Neptunian Region |
| title_sort | thermophysical model of 269 justitia main belt asteroid possibly implanted from trans neptunian region |
| topic | Asteroids Asteroid surfaces Asteroid rotation |
| url | https://doi.org/10.3847/PSJ/adb28b |
| work_keys_str_mv | AT annamarciniak thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT antoinechoukroun thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT juliaperła thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT waldemarogłoza thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT robertszakats thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT pierreantonini thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT raoulbehrend thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT gezacsornyei thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT marekdrozdz thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT marcelfauvaud thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT stephanefauvaud thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT adrianjones thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT dongheunkim thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT myungjinkim thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT viktorkudak thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT igamieczkowska thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT erikapakstiene thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT vasylperig thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion AT edasonbas thermophysicalmodelof269justitiamainbeltasteroidpossiblyimplantedfromtransneptunianregion |