Light-curve analysis and shape models of NEAs 7335, 7822, 154244, and 159402

ABSTRACT In an attempt to further characterize the near-Earth asteroid (NEA) population, we present 38 new light curves acquired between 2020 September and 2023 November for NEAs (7335) 1989 JA, (7822) 1991 CS, (154244) 2002 KL6, and (159402) 1999 AP10, obtained from observations taken at the Teide Observatory (Tenerife, Spain). With these new observations along with archival data, we computed their first shape models and spin solutions by applying the light-curve inversion method. The obtained rotation periods are in good agreement with those reported in previous works, with improved uncertainties. Additionally, besides the constant period models for (7335) 1989 JA, (7822) 1991 CS, and (159402) 1999 AP10, our results for (154244) 2002 KL6 suggest that it could be affected by a Yarkovsky–O’Keefe–Radzievskii–Paddack acceleration with a value of $\upsilon \simeq -7\times 10^{-9}$ rad d$^{-2}$. This would be one of the first detections of this effect slowing down an asteroid.

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Publication Details

Journal
Monthly Notices of the Royal Astronomical Society
Published
2024-09-02
DOI
https://doi.org/10.1093/mnras/stae2046
Citations
2
Primary Topic
Astro and Planetary Science
Type
article
Field-Weighted Citation Impact
0.66

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article

Light-curve analysis and shape models of NEAs 7335, 7822, 154244, and 159402

Alejandro Buendía Roca, N. Pinilla-Alonso, J. Licandro, Santiago Iglesias Álvarez et al.
2 citations
Monthly Notices of the Royal Astronomical Society
Astro and Planetary Science
0.66
article

Light-curve analysis and shape models of NEAs 7335, 7822, 154244, and 159402

Alejandro Buendía Roca, N. Pinilla-Alonso, J. Licandro, Santiago Iglesias Álvarez, Saúl Pérez Fernández, M. Serra‐Ricart, Julia Fernández, Javier Rodríguez Rodríguez, E. Díez-Alonso, M. R. Alarcón, Francisco Javier de Cos Juez
article en
2 citations

Abstract

ABSTRACT In an attempt to further characterize the near-Earth asteroid (NEA) population, we present 38 new light curves acquired between 2020 September and 2023 November for NEAs (7335) 1989 JA, (7822) 1991 CS, (154244) 2002 KL6, and (159402) 1999 AP10, obtained from observations taken at the Teide Observatory (Tenerife, Spain). With these new observations along with archival data, we computed their first shape models and spin solutions by applying the light-curve inversion method. The obtained rotation periods are in good agreement with those reported in previous works, with improved uncertainties. Additionally, besides the constant period models for (7335) 1989 JA, (7822) 1991 CS, and (159402) 1999 AP10, our results for (154244) 2002 KL6 suggest that it could be affected by a Yarkovsky–O’Keefe–Radzievskii–Paddack acceleration with a value of $\upsilon \simeq -7\times 10^{-9}$ rad d$^{-2}$. This would be one of the first detections of this effect slowing down an asteroid.

Monthly Notices of the Royal Astronomical SocietyVol. 533(4)
University of Central Florida (US), Universidad de La Laguna (ES), Universidad de Oviedo (ES), Instituto de Astrofísica de Canarias (ES)
National Aeronautics and Space Administration
Openalex Percentile: Top 28%
Astro and Planetary Science
0.66
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