128  TW VIRGINIS   (UG)   Range: 11.8-15.2V
     Position:   11 45 21.21  -04 26 05.3 (J2000, from .dat file)
     Magnitude:  V=15.153  B-V=0.093      (Henden, single night)

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

a) Comparison star sequence

1    11 45 38.6  -04 22 47   261  198  3  12.111  0.009   0.747  0.008   
2    11 45 35.0  -04 27 38   206  -93  3  12.504  0.010   0.533  0.004   
3    11 45 05.8  -04 21 41  -230  264  3  13.069  0.011   0.751  0.006   
4    11 45 33.9  -04 30 34   190 -269  3  13.316  0.017   0.776  0.006   
5    11 45 44.9  -04 23 02   355  183  3  13.717  0.012   0.781  0.011   
6    11 45 02.6  -04 28 19  -278 -134  3  14.304  0.011   0.583  0.002   
7    11 45 04.5  -04 29 10  -250 -185  3  14.569  0.008   0.808  0.010   
8    11 45 20.6  -04 29 09    -9 -183  3  15.002  0.016   0.739  0.003   
9    11 45 12.3  -04 23 37  -133  148  3  15.440  0.020   0.670  0.011   
10   11 45 30.4  -04 24 29   137   96  3  16.122  0.009   0.891  0.004   
11   11 45 12.7  -04 25 53  -127   12  2  16.543  0.021   0.613  0.007   


b) Wide-colour extension for CCD calibration

     11 45 28.2  -04 22 35   105  210  3  17.035  0.014   0.451  0.030   
     11 45 27.3  -04 30 13    91 -248  3  16.829  0.021   0.457  0.028   
     11 45 15.9  -04 22 30   -79  215  3  16.590  0.024   1.169  0.022   
     11 45 21.7  -04 25 38     7   27  2  17.996  0.084   1.173  0.069   
     11 45 44.1  -04 20 30   343  335  3  16.665  0.031   1.202  0.036   
 
    
Notes:

1. The VSS RASNZ chart 1152 has the same sequence as the AAVSO chart 'e' 
dated 08/1992. Those two sequences are based on a photoelectric V sequence
obtained by Richard Stanton. In addition Misselt (PASP,108,1996) measured 
two stars in common to both sequences

                         ID     V      AAVSO/  Misselt
                                       RASNZ
                         1    12.111    12.0
                         2    12.504    12.5
                         3    13.069    13.0
                         4    13.316    13.3
                         9    15.440    15.4   15.489
                         10   16.122           16.160
                         11   16.543    16.6


Bruce Sumner
Revised 9 June 1999