182  SV CANIS MINORIS   (UGZ)   Range: 12.6-17.1V 
     Position:   07 31 08.41  +05 58 48.6 (J2000, from .dat file)
     Magnitude:  V=17.110  B-V=0.291      (Henden, single night)

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

a) Comparison star sequence
1    07 30 53.5  +05 58 15  -222  -34  1   9.736  0.000   0.631  0.000   
2    07 31 31.1  +05 58 51   338    2  1  10.511  0.000   0.340  0.000   
3    07 31 04.0  +06 02 02   -65  192  4  11.735  0.228   0.889  0.164   
4    07 31 17.0  +05 58 28   129  -21  4  12.105  0.110   0.398  0.021   
5    07 31 17.9  +05 56 24   142 -145  4  12.594  0.013   0.662  0.028   
6    07 31 07.5  +05 56 12   -14 -157  4  12.943  0.008   0.455  0.008   
7    07 31 03.1  +05 56 48   -79 -122  4  13.431  0.000   1.010  0.008   
8    07 31 14.2  +05 58 35    87  -14  4  13.877  0.008   0.459  0.007   
9    07 31 09.5  +05 59 11    17   22  4  14.394  0.008   0.461  0.007   
10   07 31 17.1  +05 59 36   130   47  4  14.660  0.009   1.054  0.002   
11   07 31 15.1  +06 00 37   100  108  4  14.941  0.013   1.104  0.002   
12   07 31 01.5  +05 58 14  -103  -35  4  15.379  0.014   0.539  0.010   
13   07 31 13.9  +05 59 35    81   46  4  15.692  0.008   0.663  0.008   
14   07 31 10.2  +05 57 28    26  -81  4  15.974  0.008   0.454  0.009   
15   07 31 12.1  +05 57 36    55  -73  4  16.395  0.022   0.508  0.019   
16   07 31 09.5  +05 58 49    16   -1  4  17.052  0.006   0.786  0.007   


b) Wide-colour extension for CCD calibration

     07 31 22.6  +05 57 09   211 -101  4  13.781  0.009   0.146  0.011   
     07 31 19.2  +06 02 31   161  222  4  14.540  0.016   0.329  0.005   
     07 31 20.7  +06 03 37   183  288  4  15.834  0.000   1.333  0.012   


Notes:

1. Stars 1, 2 and 3 are saturated, and their magnitudes and colours are
approximate. However stars 1 and 2 have accurate Tycho-2 magnitudes of
V=8.45 +/-0.02 and V=10.28 +/-0.04 respectively, and these should be 
used in lieu of the magnitudes given in the table. The magnitude of 
star #3 is satisfactory for visual use.

2. SV CMi fluctuates between V=16.8 and V=17.1 at minimum, possibly a 
result of orbital modulation.

3. The are several stars common with this sequence and a sequence by 
Misselt in PASP, 1996. Another sequence appears on the AAVSO preliminary
(e) chart dated April 1982:

                   Star     Henden          Misselt     AAVSO
                           V      B-V      V     B-V
                    3    12.009  0.412   12.077 0.442    119
                    6    12.947  0.461                   129
                    7    13.432  1.016                   136 
                    8    13.883  0.465   13.968 0.491    138 
                    9    14.400  0.466   14.497 0.485    143
                   10    14.667  1.054   14.749 1.058    150
                   12    15.368  0.545                   153
                   13    15.696  0.668   15.801 0.685


Bruce Sumner
6 December 2000
Revised 24 January 2001