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Spins and shapes of 11 near-Earth asteroids observed within the NEOROCKS project
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SYSNO ASEP 0619762 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Spins and shapes of 11 near-Earth asteroids observed within the NEOROCKS project Author(s) Fatka, Petr (ASU-R) ORCID
Pravec, Petr (ASU-R) RID, ORCID
Scheirich, Peter (ASU-R) RID, ORCID
Kušnirák, Peter (ASU-R)
Hornoch, Kamil (ASU-R) ORCID
Kučáková, H. (CZ)
Ergashev, K. E. (UZ)
Souza de Joode, M. (CZ)
Burkhonov, O.A. (UZ)
Ehgamberdiev, S.A. (UZ)
Galad, A. (SK)
Világi, J. (SK)
Reddy, V. (US)
Dyvig, R. (US)
Ries, J.G. (US)
Snodgrass, C. (GB)
Donaldson, A. (GB)
Peixinho, N. (PT)
Khalouei, E. (KR)Article number A139 Source Title Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 695, March (2025)Number of pages 13 s. Publication form Online - E Language eng - English Country FR - France Keywords methods: data analysis ; methods: observational ; minor planets, asteroids: individual: near-Earth asteroids OECD category Astronomy (including astrophysics,space science) Research Infrastructure e-INFRA CZ II - 90254 - CESNET, zájmové sdružení právnických osob Method of publishing Open access Institutional support ASU-R - RVO:67985815 UT WOS 001445036300001 EID SCOPUS 105000192927 DOI https://doi.org/10.1051/0004-6361/202450027 Annotation Context. The discovery rate of near-Earth asteroids (NEAs) has steadily increased over the past three decades, yet the physical characterization of these objects has not kept pace. Aims. In an effort to help address this gap, we combined targeted photometric observations, archival data, and sparse photometric data from the Asteroid Terrestrial-impact Last Alert System (ATLAS) survey to extract as much information as possible about NEAs' rotation rates, spin-axis orientations, and shapes. Methods. We selected 17 NEAs with a potential for shape reconstruction and applied the light curve inversion method to derive their sidereal rotation periods, spin-axis directions, and convex shape models. Results. We successfully determined unique spin and shape models for seven NEAs: (5189) 1990 UQ, (6569) Ondaatje, (7025) 1993 QA, (8566) 1996 EN, (86450) 2000 CK33, the Hayabusa2# flyby target (98943) 2001 CC21, and (512245) 2016 AU(8). For an additional four asteroids (66251) 1999GJ(2), (137199) 1999KX(4), (276786) 2004 KD1, and (495615) 2015 PQ(291) we constrained their sidereal periods, spin-axis orientations, and in some cases, their shapes. Conclusions. This study highlights the importance of integrating new photometric data with archival dense light curves and sparse observations to improve the physical characterization of NEAs, even when working with suboptimal datasets. We constructed 11 NEA models, contributing to the limited set of a few dozen models derived from space missions, radar observations, and light curve inversions. Workplace Astronomical Institute Contact Anežka Melichárková, bibl@asu.cas.cz, Tel.: 323 620 326 Year of Publishing 2026 Electronic address https://hdl.handle.net/11104/0366403
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