Sihtu Planitia is a large plain on Mercury, approximately 565 km across. It was named in 2017 by the IAU. The crater Calvino lies at the center of the Planitia, and Rūdaki is on the east side.
Mariner 10 image of Sihtu Planitia and vicinity
References
^Sihtu Planitia, Gazetteer of Planetary Nomenclature, International Astronomical Union (IAU) Working Group for Planetary System Nomenclature (WGPSN)
