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

Rodríguez Rodríguez, Javier; Díez Alonso, Enrique; Iglesias Álvarez, Santiago; Pérez Fernández, Saúl; Buendia Roca, Alejandro; Fernández Díaz, Julia; Licandro, Javier; Alarcon, Miguel R.; Serra-Ricart, Miquel; Pinilla-Alonso, Noemi; de Cos Juez, Francisco Javier
Bibliographical reference

Monthly Notices of the Royal Astronomical Society

Advertised on:
10
2024
Number of authors
11
IAC number of authors
3
Citations
0
Refereed citations
0
Description
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.
Type