Shape and spin state model of contact binary (388188) 2006 DP14 using combined radar and optical observations

Richard E. Cannon; Agata Rożek; Marina Brozović; Petr Pravec; Colin Snodgrass; Michael W. Busch; James E. Robinson; Abbie Donaldson; Tanja Holc; Lance A.M. Benner; Shantanu Naidu; Peter Kušnirák; Daniel Gardener; Hana Kučáková; Elahe Khalouei; Joseph Pollock; Mariangela Bonavita; Petr Fatka; Kamil Hornoch; Sedighe Sajadian; Lara Alegre; Flavia Amadio; Michael I. Andersen; Valerio Bozza; Martin J. Burgdorf; Gabriele Columba; Martin Dominik; R. Figuera Jaimes; Tobias C. Hinse; Markus Hundertmark; Uffe G. Jorgensen; Penelope Longa-Peña; Nuno Peixinho; Markus Rabus; Sohrab Rahvar; Paolo Rota; Jesper Skottfelt; John Southworth; Jeremy Tregloan-Reed

doi:10.1093/mnras/staf371

Shape and spin state model of contact binary (388188) 2006 DP₁₄ using combined radar and optical observations

Richard E. Cannon^*, Agata Rożek, Marina Brozović, Petr Pravec, Colin Snodgrass, Michael W. Busch, James E. Robinson, Abbie Donaldson, Tanja Holc, Lance A.M. Benner, Shantanu Naidu, Peter Kušnirák, Daniel Gardener, Hana Kučáková, Elahe Khalouei, Joseph Pollock, Mariangela Bonavita, Petr Fatka, Kamil Hornoch, Sedighe SajadianLara Alegre, Flavia Amadio, Michael I. Andersen, Valerio Bozza, Martin J. Burgdorf, Gabriele Columba, Martin Dominik, R. Figuera Jaimes, Tobias C. Hinse, Markus Hundertmark, Uffe G. Jorgensen, Penelope Longa-Peña, Nuno Peixinho, Markus Rabus, Sohrab Rahvar, Paolo Rota, Jesper Skottfelt, John Southworth, Jeremy Tregloan-Reed

^*Corresponding author af dette arbejde

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

Abstract

Contact binaries are found throughout the Solar System. The recent discovery of Selam, the satellite of main-belt asteroid (152830) Dinkinesh, by the NASA Lucy mission has made it clear that the term 'contact binary' covers a variety of different types of bimodal mass distributions and formation mechanisms. Only by modelling more contact binaries can this population be properly understood. We determined a spin state and shape model for the Apollo group contact binary asteroid (388188) 2006 DP using ground-based optical and radar observations collected between 2014 and 2023. Radar delay-Doppler images and continuous-wave spectra were collected over 2 d in February 2014, while 16 light curves in the Cousins R and SDSS-r filters were collected in 2014, 2022, and 2023. We modelled the spin state using convex inversion before using the shape modelling software to include the radar observations in modelling concavities and the distinctive neck structure connecting the two lobes. We find a spin state with a period of h and pole solution of and with morphology indicating a 520 m long bilobed shape. The model's asymmetrical bimodal mass distribution resembles other small near-Earth asteroid contact binaries such as (85990) 1999 JV or (8567) 1996 HW, which also feature a smaller'head' attached to a larger'body'. The final model features a crater on the larger lobe, similar to several other modelled contact binaries. The model's resolution is 25 m, comparable to that of the radar images used.

Originalsprog	Engelsk
Tidsskrift	Monthly Notices of the Royal Astronomical Society
Vol/bind	538
Udgave nummer	4
Sider (fra-til)	2311-2329
Antal sider	19
ISSN	0035-8711
DOI	https://doi.org/10.1093/mnras/staf371
Status	Udgivet - 1 apr. 2025

Bibliografisk note

Publisher Copyright:
© 2025 The Author(s).

Adgang til dokumentet

10.1093/mnras/staf371Licens: CC BY

staf371Forlagets udgivne version, 5,37 MBLicens: CC BY

Citationsformater

Cannon, R. E., Rożek, A., Brozović, M., Pravec, P., Snodgrass, C., Busch, M. W., Robinson, J. E., Donaldson, A., Holc, T., Benner, L. A. M., Naidu, S., Kušnirák, P., Gardener, D., Kučáková, H., Khalouei, E., Pollock, J., Bonavita, M., Fatka, P., Hornoch, K., ... Tregloan-Reed, J. (2025). Shape and spin state model of contact binary (388188) 2006 DP₁₄ using combined radar and optical observations. Monthly Notices of the Royal Astronomical Society, 538(4), 2311-2329. https://doi.org/10.1093/mnras/staf371

Cannon, RE, Rożek, A, Brozović, M, Pravec, P, Snodgrass, C, Busch, MW, Robinson, JE, Donaldson, A, Holc, T, Benner, LAM, Naidu, S, Kušnirák, P, Gardener, D, Kučáková, H, Khalouei, E, Pollock, J, Bonavita, M, Fatka, P, Hornoch, K, Sajadian, S, Alegre, L, Amadio, F, Andersen, MI, Bozza, V, Burgdorf, MJ, Columba, G, Dominik, M, Figuera Jaimes, R, Hinse, TC, Hundertmark, M, Jorgensen, UG, Longa-Peña, P, Peixinho, N, Rabus, M, Rahvar, S, Rota, P, Skottfelt, J, Southworth, J & Tregloan-Reed, J 2025, 'Shape and spin state model of contact binary (388188) 2006 DP₁₄ using combined radar and optical observations', Monthly Notices of the Royal Astronomical Society, bind 538, nr. 4, s. 2311-2329. https://doi.org/10.1093/mnras/staf371

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title = "Shape and spin state model of contact binary (388188) 2006 DP14 using combined radar and optical observations",

abstract = "Contact binaries are found throughout the Solar System. The recent discovery of Selam, the satellite of main-belt asteroid (152830) Dinkinesh, by the NASA Lucy mission has made it clear that the term 'contact binary' covers a variety of different types of bimodal mass distributions and formation mechanisms. Only by modelling more contact binaries can this population be properly understood. We determined a spin state and shape model for the Apollo group contact binary asteroid (388188) 2006 DP using ground-based optical and radar observations collected between 2014 and 2023. Radar delay-Doppler images and continuous-wave spectra were collected over 2 d in February 2014, while 16 light curves in the Cousins R and SDSS-r filters were collected in 2014, 2022, and 2023. We modelled the spin state using convex inversion before using the shape modelling software to include the radar observations in modelling concavities and the distinctive neck structure connecting the two lobes. We find a spin state with a period of h and pole solution of and with morphology indicating a 520 m long bilobed shape. The model's asymmetrical bimodal mass distribution resembles other small near-Earth asteroid contact binaries such as (85990) 1999 JV or (8567) 1996 HW, which also feature a smaller'head' attached to a larger'body'. The final model features a crater on the larger lobe, similar to several other modelled contact binaries. The model's resolution is 25 m, comparable to that of the radar images used.",

keywords = "methods: observational, minor planets, asteroids: individual: (388188) 2006 DP, techniques: photometric, techniques: radar astronomy",

author = "Cannon, {Richard E.} and Agata Ro{\.z}ek and Marina Brozovi{\'c} and Petr Pravec and Colin Snodgrass and Busch, {Michael W.} and Robinson, {James E.} and Abbie Donaldson and Tanja Holc and Benner, {Lance A.M.} and Shantanu Naidu and Peter Ku{\v s}nir{\'a}k and Daniel Gardener and Hana Ku{\v c}{\'a}kov{\'a} and Elahe Khalouei and Joseph Pollock and Mariangela Bonavita and Petr Fatka and Kamil Hornoch and Sedighe Sajadian and Lara Alegre and Flavia Amadio and Andersen, {Michael I.} and Valerio Bozza and Burgdorf, {Martin J.} and Gabriele Columba and Martin Dominik and {Figuera Jaimes}, R. and Hinse, {Tobias C.} and Markus Hundertmark and Jorgensen, {Uffe G.} and Penelope Longa-Pe{\~n}a and Nuno Peixinho and Markus Rabus and Sohrab Rahvar and Paolo Rota and Jesper Skottfelt and John Southworth and Jeremy Tregloan-Reed",

note = "Publisher Copyright: {\textcopyright} 2025 The Author(s).",

year = "2025",

month = apr,

day = "1",

doi = "10.1093/mnras/staf371",

language = "English",

volume = "538",

pages = "2311--2329",

journal = "Monthly Notices of the Royal Astronomical Society",

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TY - JOUR

T1 - Shape and spin state model of contact binary (388188) 2006 DP14 using combined radar and optical observations

AU - Cannon, Richard E.

AU - Rożek, Agata

AU - Brozović, Marina

AU - Pravec, Petr

AU - Snodgrass, Colin

AU - Busch, Michael W.

AU - Robinson, James E.

AU - Donaldson, Abbie

AU - Holc, Tanja

AU - Benner, Lance A.M.

AU - Naidu, Shantanu

AU - Kušnirák, Peter

AU - Gardener, Daniel

AU - Kučáková, Hana

AU - Khalouei, Elahe

AU - Pollock, Joseph

AU - Bonavita, Mariangela

AU - Fatka, Petr

AU - Hornoch, Kamil

AU - Sajadian, Sedighe

AU - Alegre, Lara

AU - Amadio, Flavia

AU - Andersen, Michael I.

AU - Bozza, Valerio

AU - Burgdorf, Martin J.

AU - Columba, Gabriele

AU - Dominik, Martin

AU - Figuera Jaimes, R.

AU - Hinse, Tobias C.

AU - Hundertmark, Markus

AU - Jorgensen, Uffe G.

AU - Longa-Peña, Penelope

AU - Peixinho, Nuno

AU - Rabus, Markus

AU - Rahvar, Sohrab

AU - Rota, Paolo

AU - Skottfelt, Jesper

AU - Southworth, John

AU - Tregloan-Reed, Jeremy

PY - 2025/4/1

Y1 - 2025/4/1

N2 - Contact binaries are found throughout the Solar System. The recent discovery of Selam, the satellite of main-belt asteroid (152830) Dinkinesh, by the NASA Lucy mission has made it clear that the term 'contact binary' covers a variety of different types of bimodal mass distributions and formation mechanisms. Only by modelling more contact binaries can this population be properly understood. We determined a spin state and shape model for the Apollo group contact binary asteroid (388188) 2006 DP using ground-based optical and radar observations collected between 2014 and 2023. Radar delay-Doppler images and continuous-wave spectra were collected over 2 d in February 2014, while 16 light curves in the Cousins R and SDSS-r filters were collected in 2014, 2022, and 2023. We modelled the spin state using convex inversion before using the shape modelling software to include the radar observations in modelling concavities and the distinctive neck structure connecting the two lobes. We find a spin state with a period of h and pole solution of and with morphology indicating a 520 m long bilobed shape. The model's asymmetrical bimodal mass distribution resembles other small near-Earth asteroid contact binaries such as (85990) 1999 JV or (8567) 1996 HW, which also feature a smaller'head' attached to a larger'body'. The final model features a crater on the larger lobe, similar to several other modelled contact binaries. The model's resolution is 25 m, comparable to that of the radar images used.

AB - Contact binaries are found throughout the Solar System. The recent discovery of Selam, the satellite of main-belt asteroid (152830) Dinkinesh, by the NASA Lucy mission has made it clear that the term 'contact binary' covers a variety of different types of bimodal mass distributions and formation mechanisms. Only by modelling more contact binaries can this population be properly understood. We determined a spin state and shape model for the Apollo group contact binary asteroid (388188) 2006 DP using ground-based optical and radar observations collected between 2014 and 2023. Radar delay-Doppler images and continuous-wave spectra were collected over 2 d in February 2014, while 16 light curves in the Cousins R and SDSS-r filters were collected in 2014, 2022, and 2023. We modelled the spin state using convex inversion before using the shape modelling software to include the radar observations in modelling concavities and the distinctive neck structure connecting the two lobes. We find a spin state with a period of h and pole solution of and with morphology indicating a 520 m long bilobed shape. The model's asymmetrical bimodal mass distribution resembles other small near-Earth asteroid contact binaries such as (85990) 1999 JV or (8567) 1996 HW, which also feature a smaller'head' attached to a larger'body'. The final model features a crater on the larger lobe, similar to several other modelled contact binaries. The model's resolution is 25 m, comparable to that of the radar images used.

KW - methods: observational

KW - minor planets, asteroids: individual: (388188) 2006 DP

KW - techniques: photometric

KW - techniques: radar astronomy

U2 - 10.1093/mnras/staf371

DO - 10.1093/mnras/staf371

M3 - Journal article

AN - SCOPUS:105002681552

SN - 0035-8711

VL - 538

SP - 2311

EP - 2329

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

IS - 4

ER -