SAO Catalog Binary Entry Format

Each catalog entry in SAO and SAOra contains 32 bytes with the following information: 
Real*4 XNO		Catalog number of star
Real*8 SRA0		B1950 Right Ascension (radians)
Real*8 SDEC0		B1950 Declination (radians)
Character*2 IS		Spectral type (2 characters)
Integer*2 MAG		V Magnitude * 100
Real*4 XRPM		R.A. proper motion (radians per year)
Real*4 XDPM		Dec. proper motion (radians per year)

Sample Entries

The first and last entries in the SAO catalog file are: 

SAO B1950 Equatorial Coordinates  Magnitude  run  8/ 2/1993
     1   0  00  05.097    82  41  41.82     7.20  A0
258996  23  54  51.661   -82  26  52.62     5.70  K0

The first and last entries in the RA-sorted SAOra catalog file are: 

SAOra B1950 Equatorial Coordinates  Magnitude  run  8/ 2/1993
147051   0  00  00.156   -10  59  43.79     8.90  K2
255628  23  59  59.310   -61  40  13.53     9.80  G0