J 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

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.