Flamsteed's number

Flamsteed's number

[′flam‚stēdz ‚nəm·bər]
(astronomy)
A number sometimes used with the possessive form of the Latin name of the constellation to identify a star, for example, 72 Ophiuchi.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.