2025
Spins and shapes of 11 near-Earth asteroids observed within the NEOROCKS project
FATKA, P.; P. PRAVEC; P. SCHEIRICH; P. KUSNIRAK; K. HORNOCH et al.Basic information
Original name
Spins and shapes of 11 near-Earth asteroids observed within the NEOROCKS project
Authors
FATKA, P.; P. PRAVEC; P. SCHEIRICH; P. KUSNIRAK; K. HORNOCH; Hana KUČÁKOVÁ; K. E. ERGASHEV; M. SOUZA DE JOODE; O. A. BURKHONOV; S. A. EHGAMBERDIEV; A. GALAD; J. VILAGI; V. REDDY; R. DYVIG; J. G. RIES; C. SNODGRASS; A. DONALDSON; N. PEIXINHO and E. KHALOUEI
Edition
ASTRONOMY & ASTROPHYSICS, LES ULIS CEDEX A, EDP SCIENCES S A, 2025, 0004-6361
Other information
Language
English
Type of outcome
Article in a journal
Field of Study
10308 Astronomy
Country of publisher
France
Confidentiality degree
is not subject to a state or trade secret
References:
Impact factor
Impact factor: 5.800 in 2024
Organization unit
Institute of physics in Opava
UT WoS
001445036300001
EID Scopus
2-s2.0-105000192927
Keywords in English
methods: data analysismethods: observational;minor planets; asteroids: individual: near-Earth asteroids
Tags
International impact, Reviewed
Changed: 29/1/2026 13:07, Mgr. Pavlína Jalůvková
Abstract
In the original language
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.