The surface of the planet Mercury has been divided into fifteen quadrangles, designated H-1 to H-15 (the 'H' stands for Hermes, the Greek equivalent of Mercury).[1] The quadrangles are named for prominent surface features visible within each area.[1] The quadrangles were initially named for albedo features, as these were the most prominent features visible before mapping was carried out by spacecraft. The mapping carried out with the images obtained by the Mariner 10 flybys in 1974 and 1975 led to nine of the quadrangles being renamed for newly mapped prominent features.[1] The remaining six quadrangles were completely unmapped by Mariner 10 and were still referred to by their albedo feature names. Following the arrival of MESSENGER in orbit in 2011, these six quadrangles were mapped and renamed.[2] The base mosaic used in the new maps was produced with orbital images by the MESSENGER Team and released by NASA’s Planetary Data System on March 8, 2013. This global mosaic includes 100% coverage of Mercury’s surface.
Name[3]
Number
Namesake
Albedo feature name[4]
Area[5]
Mariner 10 map
Current map[3]
Notes
Borealis
H-1
Borealis Planitia[6]
Borea
North pole to 67° latitude
Provisionally called "Goethe", but renamed by the International Astronomical Union in 1976 (IAU, 1977).[5]
Victoria
H-2
Victoria Rupes
Aurora
0 to 90° longitude, 21 to 66° latitude
Shakespeare
H-3
Shakespeare crater
Caduceata
90 to 180° longitude, 21 to 66° latitude
Raditladi
H-4
Raditladi Basin
Liguria
270 to 180° longitude, 21 to 66° latitude
none
Hokusai
H-5
Hokusai crater
Apollonia
360 to 270° longitude, 21 to 66° latitude
none
Kuiper
H-6
Kuiper crater
Tricrena
0 to 72° longitude, −22 to 22° latitude
Beethoven
H-7
Beethoven crater
Solitudo Lycaonis
72 to 144° longitude, −22 to 22° latitude
Tolstoj
H-8
Tolstoj crater
Phaethontias
144 to 216° longitude, −22 to 22° latitude
Provisionally called "Tir", but renamed by the International Astronomical Union in 1976 (IAU, 1977).[5]
Eminescu
H-9
Eminescu crater
Solitudo Criophori
216 to 288° longitude, −22 to 22° latitude
none
Derain
H-10
Derain crater
Pieria
288 to 360° longitude, –22 to 22° latitude
none
Discovery
H-11
Discovery Rupes[6]
Solitudo Hermae Trismegisti
0 to 90° longitude, −21 to −66° latitude
Michelangelo
H-12
Michelangelo crater
Solitudo Promethei
90 to 180° longitude, −21 to -66° latitude
Neruda
H-13
Neruda crater
Solitudo Persephones
180 to 270° longitude, −21 to –66° latitude
none
Debussy
H-14
Debussy crater
Cyllene
270 to 360° longitude, −21 to −66° latitude
none
Bach
H-15
Bach crater
Australia
South pole to −67° latitude
^ abcStrom, Robert G.; Sprague, Ann L. (2003). Exploring Mercury: The Iron Planet. p. 79. ISBN 9781852337315.
^"IAU Information Bulletin" (PDF) (108). International Astronomical Union. July 2011: 23. {{cite journal}}: Cite journal requires |journal= (help)
^ ab"1:5 Million-Scale Maps of Mercury". Gazetteer of Planetary Nomenclature (USGS/IAU/NASA). Retrieved 2021-10-24.
^"SP-423 Atlas of Mercury". NASA. p. 21. Retrieved 2013-09-19.
^ abcSchaber, Gerald G.; John F. McCauley (1980). Geologic Map of the Tolstoj (H-8) Quadrangle of Mercury(PDF). U.S. Geological Survey. USGS Miscellaneous Investigations Series Map I–1199, as part of the Atlas of Mercury, 1:5,000,000 Geologic Series. Retrieved 2007-11-12.
^ ab"SP-423 Atlas of Mercury". NASA. Retrieved 2007-11-12.
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