ALPO map of Mars

1954

Mars_1954_ALPO_Map.jpg

Association of Lunar and Planetary Observers (A.L.P.O.)

1954

Source

 

1960

Both, Ernst E., A.L.P.O. Map of Mars for 1960-1961

 

These maps are updated regularly.

See http://www.alpo-astronomy.org/jbeish/Observing_Mars_4.html

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