Full rotationally phase-resolved visible reflectance spectroscopy of 3200 Phaethon

Katsuhito Ohtsuka, Takashi Ito, Daisuke Kinoshita, Shinsuke Abe, Kyosuke Sawai, Kazuhiro Funabashi, Ryo Kato, Seidai Miyasaka, Sunao Hasegawa, Tomoki Nakamura, Wen Ping Chen

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4 Scopus citations


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 %/0.1μm, 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.

Original languageEnglish
Article number104940
JournalPlanetary and Space Science
StatePublished - 15 Oct 2020


  • Asteroids: individual (3200 Phaethon, 155140 2005 UD)
  • Comets
  • Meteorites
  • Meteoroids
  • Meteors
  • Methods: observational
  • Minor planets
  • Photometric
  • Planetary systems
  • Techniques: spectroscopic


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