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

J 2025

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

CANNON, Richard E.; Agata ROZEK; Marina BROZOVIC; Petr PRAVEC; Colin SNODGRASS et al.

Basic information

Original name

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

Authors

Edition

Monthly Notices of the Royal Astronomical Society, US - Spojené státy americké, 2025, 0035-8711

Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10308 Astronomy

Country of publisher

United Kingdom of Great Britain and Northern Ireland

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 4.800 in 2024

Organization unit

Institute of physics in Opava

DOI

https://doi.org/10.1093/mnras/staf371

UT WoS

001455377700001

EID Scopus

2-s2.0-105002681552

Keywords in English

methods: observational;techniques: photometric;techniques: radar astronomy;minor planets; asteroids: individual: (388188) 2006 DP14

Abstract

In the original language

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 DP14 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 (5.7860 +/- 0.0001) h and pole solution of lambda=(180 +/- 121)degrees and beta=(-80 +/- 7)degrees 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 JV6 or (8567) 1996 HW1, 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

Cite

CANNON, Richard E.; Agata ROZEK; Marina BROZOVIC; Petr PRAVEC; Colin SNODGRASS; Michael W BUSCH; James E. ROBINSON; Abbie DONALDSON; Tanja HOLC; Lance A M BENNER; Shantanu NAIDU; Peter KUSNIRAK; 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; Dominik MARTIN; R Figuera JAIMES; Tobias C. HINSE; Markus HUNDERTMARK; Uffe G. JORGENSEN; Penelope LONGA-PENA; Nuno PEIXINHO; Markus RABUS; Sohrab RAHVAR; Paolo ROTA; Jesper SKOTTFELT; John SOUTHWORTH and Jeremy TREGLOAN-REED. Shape and spin state model of contact binary (388188) 2006 DP14 using combined radar and optical observations. Monthly Notices of the Royal Astronomical Society. US - Spojené státy americké, 2025, vol. 538, No 4, p. 2311-2329. ISSN 0035-8711. Available from: https://doi.org/10.1093/mnras/staf371.

@article{90508,
 author = {Cannon, Richard E. and Rozek, Agata and Brozovic, Marina and Pravec, Petr and Snodgrass, Colin and Busch, Michael W and Robinson, James E. and Donaldson, Abbie and Holc, Tanja and Benner, Lance A M and Naidu, Shantanu and Kusnirak, Peter and Gardener, Daniel and Kučáková, Hana and Khalouei, Elahe and Pollock, Joseph and Bonavita, Mariangela and Fatka, Petr and Hornoch, Kamil and Sajadian, Sedighe and Alegre, Lara and Amadio, Flavia and Andersen, Michael I. and Bozza, Valerio and Burgdorf, Martin J. and Columba, Gabriele and Martin, Dominik and Jaimes, R Figuera and Hinse, Tobias C. and Hundertmark, Markus and Jorgensen, Uffe G. and LongaandPena, Penelope and Peixinho, Nuno and Rabus, Markus and Rahvar, Sohrab and Rota, Paolo and Skottfelt, Jesper and Southworth, John and TregloanandReed, Jeremy},
 article_location = {US - Spojené státy americké},
 article_number = {4},
 doi = {https://doi.org/10.1093/mnras/staf371},
 keywords = {methods: observational;techniques: photometric;techniques: radar astronomy;minor planets; asteroids: individual: (388188) 2006 DP14},
 language = {eng},
 issn = {0035-8711},
 journal = {Monthly Notices of the Royal Astronomical Society},
 title = {Shape and spin state model of contact binary (388188) 2006 DP14 using combined radar and optical observations},
 url = {https://watermark02.silverchair.com/staf371.pdf?token=AQECAHi208BE49Ooan9kkhW_Ercy7Dm3ZL_9Cf3qfKAc485ysgAAA3kwggN1BgkqhkiG9w0BBwagggNmMIIDYgIBADCCA1sGCSqGSIb3DQEHATAeBglghkgBZQMEAS4wEQQMUf2IGi6e6NCusGqZAgEQgIIDLPQtw_1n8vCuSwX1ru1ADyhXx47zc0--DYUyKML6kvrU},
 volume = {538},
 year = {2025}
}

TY - JOUR
ID - 90508
AU - Cannon, Richard E. - Rozek, Agata - Brozovic, Marina - Pravec, Petr - Snodgrass, Colin - Busch, Michael W - Robinson, James E. - Donaldson, Abbie - Holc, Tanja - Benner, Lance A M - Naidu, Shantanu - Kusnirak, Peter - Gardener, Daniel - Kučáková, Hana - Khalouei, Elahe - Pollock, Joseph - Bonavita, Mariangela - Fatka, Petr - Hornoch, Kamil - Sajadian, Sedighe - Alegre, Lara - Amadio, Flavia - Andersen, Michael I. - Bozza, Valerio - Burgdorf, Martin J. - Columba, Gabriele - Martin, Dominik - Jaimes, R Figuera - Hinse, Tobias C. - Hundertmark, Markus - Jorgensen, Uffe G. - Longa-Pena, Penelope - Peixinho, Nuno - Rabus, Markus - Rahvar, Sohrab - Rota, Paolo - Skottfelt, Jesper - Southworth, John - Tregloan-Reed, Jeremy
PY - 2025
TI - Shape and spin state model of contact binary (388188) 2006 DP14 using combined radar and optical observations
JF - Monthly Notices of the Royal Astronomical Society
VL - 538
IS - 4
SP - 2311-2329
EP - 2311-2329
SN - 00358711
KW - methods: observational;techniques: photometric;techniques: radar astronomy;minor planets
KW - asteroids: individual: (388188) 2006 DP14
UR - https://watermark02.silverchair.com/staf371.pdf?token=AQECAHi208BE49Ooan9kkhW_Ercy7Dm3ZL_9Cf3qfKAc485ysgAAA3kwggN1BgkqhkiG9w0BBwagggNmMIIDYgIBADCCA1sGCSqGSIb3DQEHATAeBglghkgBZQMEAS4wEQQMUf2IGi6e6NCusGqZAgEQgIIDLPQtw_1n8vCuSwX1ru1ADyhXx47zc0--DYUyKML6kvrU
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 DP14 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 (5.7860 +/- 0.0001) h and pole solution of lambda=(180 +/- 121)degrees and beta=(-80 +/- 7)degrees 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 JV6 or (8567) 1996 HW1, 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
ER -

CANNON, Richard E.; Agata ROZEK; Marina BROZOVIC; Petr PRAVEC; Colin SNODGRASS; Michael W BUSCH; James E. ROBINSON; Abbie DONALDSON; Tanja HOLC; Lance A M BENNER; Shantanu NAIDU; Peter KUSNIRAK; 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; Dominik MARTIN; R Figuera JAIMES; Tobias C. HINSE; Markus HUNDERTMARK; Uffe G. JORGENSEN; Penelope LONGA-PENA; Nuno PEIXINHO; Markus RABUS; Sohrab RAHVAR; Paolo ROTA; Jesper SKOTTFELT; John SOUTHWORTH and Jeremy TREGLOAN-REED. Shape and spin state model of contact binary (388188) 2006 DP\&{}lt;sub\&{}gt;14\&{}lt;/sub\&{}gt; using combined radar and optical observations. \textit{Monthly Notices of the Royal Astronomical Society}. US - Spojené státy americké, 2025, vol.~538, No~4, p.~2311-2329. ISSN~0035-8711. Available from: https://doi.org/10.1093/mnras/staf371.

Přehled o publikaci

Shape and spin state model of contact binary (388188) 2006 DP<sub>14</sub> using combined radar and optical observations