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Photometry and Polarimetry of 2010 XC$_{15}$: Observational Confirmation of E-type Near-Earth Asteroid Pair by Beniyama, Jin; Sako, Shigeyuki; Ohtsuka, Katsuhito; Sekiguchi, Tomohiko; Ishiguro, Masateru; Kuroda, Daisuke; Urakawa, Seitaro; Yoshida, Fumi; Takumi, Asami; Maeda, Natsuho; Takahashi, Jun; Takagi, Seiko; Saito, Hiroaki; Nakaoka, Tatsuya; Saito, Tomoki; Ohshima, Tomohito; Imazawa, Ryo; Kagitani, Masato; Takita, Satoshi is a scholarly article available to read on EtoBox.

What is Photometry and Polarimetry of 2010 XC$_{15}$: Observational Confirmation of E-type Near-Earth Asteroid Pair about?

Asteroid systems such as binaries and pairs are indicative of physical properties and dynamical histories of the Small Solar System Bodies. Although numerous observational and theoretical studies have been carried out, the formation mechanism of asteroid pairs is still unclear, especially for near-Earth asteroid (NEA) pairs. We conducted a series of optical photometric and polarimetric observations of a small NEA 2010 XC$_{15}$ in 2022 December to investigate its surface properties. The rotation period of 2010 XC$_{15}$ is possibly a few to several dozen hours and color indices of 2010 XC$_{15}$ are derived as $g-r=0.435\pm0.008$, $r-i=0.158\pm0.017$, and $r-z=0.186\pm0.009$ in the Pan-STARRS system. The linear polarization degrees of 2010 XC$_{15}$ are a few percent at the phase angle range of 58$^{\circ}$ to 114$^{\circ}$. We found that 2010 XC$_{15}$ is a rare E-type NEA on the basis of its photometric and polarimetric properties. Taking the similarity of not only physical properties but also dynamical integrals and the rarity of E-type NEAs into account, we suppose that 2010 XC$_{15}$ and 1998 WT$_{24}$ are of common origin (i.e., asteroid pair). These two NEAs are the sixth NE

Author

Beniyama, Jin; Sako, Shigeyuki; Ohtsuka, Katsuhito; Sekiguchi, Tomohiko; Ishiguro, Masateru; Kuroda, Daisuke; Urakawa, Seitaro; Yoshida, Fumi; Takumi, Asami; Maeda, Natsuho; Takahashi, Jun; Takagi, Seiko; Saito, Hiroaki; Nakaoka, Tatsuya; Saito, Tomoki; Ohshima, Tomohito; Imazawa, Ryo; Kagitani, Masato; Takita, Satoshi

Published

2023

Language

EN