Note: Detailed information can be found in intro.tex (see also http://aries.usno.navy.mil/ad/ac.html) Direct links to Hipparcos and Tycho observations are provided from the relevant columns.

I/247/ac2000 Post annotation

The AC2000 Catalogue (Urban+ 1997) ReadMe+ftp metaI/247/ac2000 full AC J2000 catalog, split here into 14 files. (4621836 rows) (Note)

Full	_RAJ2000 "h:m:s"	_DEJ2000 "d:m:s"	_RAB1950 "h:m:s"	_DEB1950 "d:m:s"	_Glon deg	_Glat deg	RA(ICRS) "h:m:s"	DE(ICRS) "d:m:s"	Bmag mag	Epoch yr	e_RAs (...)	e_DEs arcsec	AC2000	TYC	ACRS	Vflag
1	23 07 27.91600	+21 08 08.2500	23 05 00.09950	+20 51 53.7473	092.76167309	-35.57241755	23 07 27.916	+21 08 08.25	6.83	1894.785	0.039	0.464	848258	171800235001