Place names for locations on the surface of Ryugu were discussed by Division F (Planetary Systems and Bioastronomy) of the International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (hereafter IAU WG) and approved in December 2018.

Figure 1 shows a map of Ryugu with the place names labelled. Additionally, Figure 2 shows the location of the places on images of Ryugu taken from four different directions. In these figures, the north pole of Ryugu is at the image top. Please keep in mind that the north pole of Ryugu is in the same direction as the south pole on Earth, as Ryugu rotates in the opposite direction.

Figure 1: Map of Ryugu showing the place names

Figure 1: Map of Ryugu showing the place names.
Tritonis and Alice's Wonderland are nicknames of the MINERVA-II1 and MASCOT landing sites, respectively, and not place names recognized by the IAU. (Image credit：JAXA※ )
※ The images of Ryugu are from the ONC team (JAXA, University of Tokyo, Kochi University, Rikkyo University, Nagoya University, Chiba Institute of Technology, Meiji University, University of Aizu, AIST).

(2019.02.04, Correction: In the original article, the MINERVA-II1 site name was given as "Trinitas" but has been corrected to "Tritonis". )

Figure 2: The location of place names on Ryugu

Figure 2: The location of place names on Ryugu.
Tritonis and Alice's Wonderland are nicknames of the MINERVA-II1 and MASCOT landing sites, respectively, and not place names recognized by the IAU. (Image credit：JAXA※ )
※ The images of Ryugu are from the ONC team (JAXA, University of Tokyo, Kochi University, Rikkyo University, Nagoya University, Chiba Institute of Technology, Meiji University, University of Aizu, AIST).

(2019.02.04, Correction: In the original article, the MINERVA-II1 site name was given as "Trinitas" but has been corrected to "Tritonis". )

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