Aitken's formula

Aitken's formula

[¦āt·kənz ¦fȯrm·yə·lə]
(astronomy)
The expression used to determine the separation limit for true binary stars: log p ″ = 2.5 - 0.2 m, where p ″ = limit, m = magnitude.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.