Question: A Mars crater is named after the successor of who?

Related documents: [0]  [DOC] Halley Crater is an impact crater in the Argyre quadrangle of Mars, located at 48.7°S latitude and 59.3°W longitude. It is 84.5 km in diameter and was named after Edmond Halley, and the name was approved in 1973. [END] 
[1]  [DOC] Edmond (or Edmund) Halley, FRS (pronounced ; 8 November [O.S. 29 October] 1656 – 25 January 1742 [O.S. 14 January 1741] ) was an English astronomer, geophysicist, mathematician, meteorologist, and physicist who is best known for computing the orbit of Halley's Comet. He was the second Astronomer Royal in Britain, succeeding John Flamsteed. [END]  
Answer: John Flamsteed
John Flamsteed