239  TX TRIANGULII   (UGSS)   Range: 14.5-18.2V
     Position:   01 37 37.24  +30 02 48.9 (J2000, from .dat file)
     Magnitude:  V=16.953  B-V=0.445      (in .dat file)

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

a) Comparison star sequence

1    01 37 27.6  +30 06 41  -125  232  2  12.675  0.010   0.952  0.001   
2    01 37 24.3  +29 58 30  -168 -259  2  13.016  0.006   0.666  0.002   
3    01 38 00.0  +29 58 19   297 -270  2  14.184  0.012   1.102  0.006   
4    01 37 31.3  +30 00 00   -77 -169  2  14.363  0.020   0.964  0.002   
5    01 37 53.4  +30 02 11   211  -38  2  14.828  0.012   0.995  0.012   
6    01 37 37.2  +29 58 49    -1 -240  2  15.149  0.010   0.732  0.008   
7    01 37 18.9  +30 00 33  -238 -136  2  15.535  0.012   0.669  0.002   
8    01 37 42.9  +30 02 44    73   -5  2  15.878  0.010   0.632  0.003   
9    01 37 32.0  +30 02 30   -68  -19  2  16.660  0.025   1.094  0.010   
10   01 37 32.0  +30 03 19   -68   30  2  16.960  0.008   0.585  0.004   
11   01 37 30.2  +30 01 51   -91  -58  2  17.925  0.055   1.044  0.091   


b) Wide-colour extension for CCD calibration

     01 37 41.1  +30 08 44    50  355  2  15.466  0.047   1.556  0.023   


Notes:

1. There is a bright Tycho-2 star with a reliable magnitude at
01h 38m 02.9s +29d 59' 44" with a magnitude of V=9.42+/-0.02.


Bruce Sumner
22 October 2001
Revised 10 February 2002