Janáček is a crater on Mercury. It has a diameter of 47 kilometers. Its name was adopted by the International Astronomical Union in 1985. Janáček is named for the Czech composer Leoš Janáček, who lived from 1854 to 1928. The MESSENGER Mercury orbiter crashed near the crater on April 30, 2015.
- Moore, Patrick (2000). The Data Book of Astronomy. Institute of Physics Publishing. ISBN 0-7503-0620-3.
- "Janáček". Gazetteer of Planetary Nomenclature. NASA. Retrieved 2 July 2012.
- "Mercury Messenger Mission Ends with a Smashing Finale". Universe Today. April 30, 2015. Retrieved May 2, 2015.
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