List of quadrangles on Mercury

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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]

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 Mercury, Borea region.jpg H-1 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 Mercury, Aurora region.jpg H-2
Shakespeare H-3 Shakespeare crater Caduceata 90 to 180° longitude, 21 to 66° latitude Mercury, Caduceata region.jpg H-3
Raditladi H-4 Raditladi Basin Liguria 270 to 180° longitude, 21 to 66° latitude none H-4
Hokusai H-5 Hokusai crater Apollonia 360 to 270° longitude, 21 to 66° latitude none H-5
Kuiper H-6 Kuiper crater Tricrena 0 to 72° longitude, −22 to 22° latitude Mercury h06 Kuiper quadrangle.png H-6
Beethoven H-7 Beethoven crater Solitudo Lycaonis 72 to 144° longitude, −22 to 22° latitude Mercury h07 Beethoven quadrangle.png H-7
Tolstoj H-8 Tolstoj crater Phaethontias 144 to 216° longitude, −22 to 22° latitude Mercury h08 Tolstoj quadrangle.png H-8 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 H-9
Derain H-10 Derain crater Pieria 288 to 360° longitude, –22 to 22° latitude none H-10
Discovery H-11 Discovery Rupes[6] Solitudo Hermae Trismegisti 0 to 90° longitude, −21 to −66° latitude Mercury h11 Discovery quadrangle.png H-11
Michelangelo H-12 Michelangelo crater Solitudo Promethei 90 to 180° longitude, −21 to -66° latitude Mercury h12 Michelangelo quadrangle.png H-12
Neruda H-13 Neruda crater Solitudo Persephones 180 to 270° longitude, −21 to –66° latitude none H-13
Debussy H-14 Debussy crater Cyllene 270 to 360° longitude, −21 to −66° latitude none H-14
Bach H-15 Bach crater Australia South pole to −67° latitude Mercury, Australia region.jpg H-15

Schema of the quadrangles[edit]

Relationship of the quadrangles to each other on the surface of Mercury (North is at the top):[5]

Mercury quads.png

References[edit]

  1. ^ a b c Strom, Robert G.; Sprague, Ann L. (2003). Exploring Mercury: The Iron Planet. p. 79. 
  2. ^ "IAU Information Bulletin" (pdf) (108). International Astronomical Union. July 2011. p. 23. 
  3. ^ a b "1:5 Million-Scale Maps of Mercury". Gazetteer of Planetary Nomenclature (USGS/IAU/NASA). Retrieved 2013-09-19. 
  4. ^ "SP-423 Atlas of Mercury". NASA. p. 21. Retrieved 2013-09-19. 
  5. ^ a b c d Schaber, Gerald G.; John F. McCauley (1980). Geologic Map of the Tolstoj (H-8) Quadrangle of Mercury. 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. 
  6. ^ a b "SP-423 Atlas of Mercury". NASA. Retrieved 2007-11-12.