imua2(1) on Linux
The text 3802930cac7c, as Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch) shipped it.
Find USNO-A2.0 stars in FITS or IRAF image files
Flags it lists
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-h -
-n -
-p -
-s -
-t -
-u -
-v -
-w