From Dr. James Hilton's When Did the Asteroids Become Minor Planets?Archived 2008년 3월 24일 - 웨이백 머신, particularly the discussion of Gould, B. A. 1852, On the Symbolic Notation of the Asteroids, Astronomical Journal, Vol. 2, and immediately subsequent history. The discussion of C. J. Cunningham (1988), also from there, explains the parenthetical part.
From Dr. James Hilton's When Did the Asteroids Become Minor Planets?Archived 2008년 3월 24일 - 웨이백 머신, particularly the discussion of Gould, B. A. 1852, On the Symbolic Notation of the Asteroids, Astronomical Journal, Vol. 2, and immediately subsequent history. The discussion of C. J. Cunningham (1988), also from there, explains the parenthetical part.