Honorary Membership was limited to 10 from 1890-1900, and to 15 from 1901 onwards. Corresponding Membership was a lesser class of Honoris causa membership in the early years. A few honorary members, such as Barnard, were first made corresponding members for a short time before being recommissioned as honorary members.
Click on a column heading to sort the list. Click again to reverse the order.
|Newcomb, Rear Admiral Dr. Simon||USA||1891||1909|
|Newnham, Right Rev. Jervois Arthur||United Kingdom/Canada||1895||1905|
|Oort, Dr. Jan Hendrik||Netherlands||1954||1992|
|Peal, Mr. Samuel Edward||United Kingdom/India||1891||1897|
|Pettit, Mr. H.||Canada||1890||1890|
|Pickering, Mr. William Henry||USA||1894||1938|
|Pickering, Dr. Edward Charles, OPM||USA||1894||1919|
|Plaskett, Prof. Harry H.||Canada/United Kingdom||1961||1979|
|Proctor, Mrs. Richard A.||USA/Ireland||1891||1896|
|Proctor, Miss Mary||USA||1896||1957|