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List of quadrangles on Mercury

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List of quadrangles on Mercury

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 re-named 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 re-named.[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 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 H-2
Shakespeare H-3 Shakespeare crater Caduceata 90 to 180° longitude, 21 to 66° latitude 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 H-6
Beethoven H-7 Beethoven crater Solitudo Lycaonis 72 to 144° longitude, −22 to 22° latitude H-7
Tolstoj H-8 Tolstoj crater Phaethontias 144 to 216° longitude, −22 to 22° latitude 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 H-11
Michelangelo H-12 Michelangelo crater Solitudo Promethei 90 to 180° longitude, −21 to -66° latitude 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 H-15

Schema of the quadrangles

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

References

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