4    V635 CASSIOPEIAE   (X-RAY)   Range: 14.5-16.3V
     Position:   01 18 31.96  +63 44 33.1 (J2000, from .dat file)
     Magnitude:  V=15.191  B-V=1.589      (from .dat file)

ID     RA  (2000)   DEC       X    Y   N    V      ERR     B-V    ERR   

a) Comparison star sequence
 
1    01 19 11.5  +63 45 58   262   85  3  12.391  0.005   0.932  0.006   
2    01 18 45.3  +63 44 04    88  -29  3  12.990  0.005   0.719  0.009   
3    01 18 57.9  +63 45 00   172   26  3  13.528  0.005   0.796  0.010   
4    01 19 05.8  +63 45 04   224   31  3  13.929  0.040   1.106  0.010   
5    01 18 09.1  +63 40 39  -153 -234  3  14.116  0.005   1.119  0.005   
6    01 18 50.2  +63 44 22   121  -11  3  14.419  0.005   0.998  0.009   
7    01 18 46.4  +63 46 04    96   91  3  14.606  0.000   1.460  0.007   
8    01 18 31.5  +63 47 29    -3  176  3  15.068  0.010   1.223  0.014   
9    01 18 39.9  +63 43 13    53  -80  3  15.648  0.000   1.214  0.011   
10   01 18 19.8  +63 45 02   -81   29  3  15.933  0.006   1.343  0.012   
11   01 18 27.3  +63 41 46   -31 -167  3  16.379  0.009   1.300  0.007   
12   01 18 25.4  +63 42 54   -44  -99  3  17.109  0.026   1.659  0.016   


b) Wide-colour extension for CCD calibration

     01 18 00.8  +63 43 27  -208  -66  3  12.450  0.008   2.184  0.005   
     01 19 15.0  +63 48 41   284  248  3  12.835  0.012   2.569  0.007   

Notes:

1. Five stars are common between this sequence and the sequence shown on 
AAVSO Preliminary Chart 0111263(d) dated January 1990:

                         Henden   AAVSO
                   Star     V       V
                     1    12.391   125
                    red   12.450   127
                     2    12.990   133
                     3    13.528   136


Bruce Sumner
6 September 2000