Tags: Crater.
Porter is a large-scale impact crater in the Thaumasia quadrangle on the planet Mars situated in Aonia Terra at 50.8° south and 113.9º west. The impact caused a bowl 105 kilometres (65 mi) across. The name was chosen in 1973 by the International Astronomical Union in honour of the US astronomer and explorer Russell W. Porter (1871-1949).
