Arthur Matthew Weld Downing (13 April 1850 – 8 December 1917) was a British astronomer.
He was born in Carlow, Ireland.
He became an assistant at the Royal Greenwich Observatory in 1873. He became superintendent of HM Nautical Almanac Office from 1891 to 1910. He was elected a Fellow of the Royal Society in June 1896.
He collaborated with his U.S. counterpart Simon Newcomb
in establishing an international standard for astronomical constants.
Downing was elected an Honorary Member of the Astronomical and Physical Society of Toronto in 1896.
From the archives:
Downing's acceptance letter of 27 April 1896, and acknowledgement letter of 5 June 1896.