J. A. Carroll, 1899 January 8 - 1974 May 2.

J. A. Docobo, A. Elipe, and H. A. McAlister (eds.), Visual Double Stars: Formation, Dynamics and Evolutionary Trucks

J. A. Steff-Langston MBE Executive Secretary 1980-1991

J. Allen Hynek:1910-86

J. Andersen (ed.), Transactions of the International Astronomical Union, Volume XXIIIB

J. Atmosph. Terr. Phys.0

J. B. Biot and Refraction Calculations

J. C. Kapteyn

J. C. Kapteyn Centennial

J. C. Kapteyn, 1851-1922

J. C. Kapteyn, G. E. Hale and Mt. Wilson (1908-1914)

J. Cabannes (1885-1959)

J. Comas Sola's asteroid (925) Alphonsina

J. E. B. Mayor and Todhunter

J. E. Keeler's Discovery of a Gap in Saturn's A-Ring.

J. E. Keeler's discovery of a gap in the outer part of the A ring

J. E. Mellish, died 1970 July.

J. Ernest G. Yalden (1870-1937)

J. F. Encke, Rechtfertigung der Berechnung der Florastörungen in Beziehung auf eine Mittheilung des Herrn P. A. Hansen

J. F. J. Schmidt's Nova