Full rotationally phase-resolved visible reflectance spectroscopy of 3200 Phaethon. (15th October 2020)

• Record Type: Journal Article
• Authors: Ohtsuka, Katsuhito; Ito, Takashi; Kinoshita, Daisuke; Abe, Shinsuke; Sawai, Kyosuke; Funabashi, Kazuhiro; Kato, Ryo; Miyasaka, Seidai; Hasegawa, Sunao; Nakamura, Tomoki; Chen, Wen-Ping
• Is Part Of: Planetary and space science. Volume 191(2020)
• Publication Date: 2020-10-15
• Subjects: Minor planets -- Asteroids: individual (3200 Phaethon, 155140 2005 UD) -- Comets -- Meteorites -- Meteors -- Meteoroids -- Techniques: spectroscopic -- Photometric -- Methods: observational -- Planetary systems; Space sciences -- Periodicals; Atmosphere, Upper -- Periodicals; Sciences spatiales -- Périodiques; Haute atmosphère -- Périodiques; 523
• DOI: 10.1016/j.pss.2020.104940
• Languages: English
• ISSNs: 0032-0633

Abstract

Abstract: We present time-series optical spectroscopic observations of 3200 Phaethon during its 2007 return, complemented with R -band photometry. The spectral gradient centered around 0.55 μm varies between − 5.0 % / 0.1 μm and 0.6 % / 0.1 μm, indicating a B- or C-type color. Moreover, rotational modulation of the spectral slope of this asteroid suggests its surface compositional inhomogeneity, particularly the existence of a C-type surface at a certain longitude on this asteroid.