183  UV GEMINORUM   (UGSU)   Range: 14.2-19.0V
     Position:   06 38 44.16  +18 16 11.5  (J2000, from .dat file)
     Magnitude:  V=19.041  B-V=0.223       (Henden, single night

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

a) Comparison star sequence

1    06 38 58.0  +18 13 18   197 -174  4  11.179  0.250   0.483  0.030   
2    06 38 18.4  +18 14 17  -368 -115  1  11.833  0.001   0.706  0.001   
3    06 38 50.0  +18 13 17    83 -175  3  12.510  0.039   1.188  0.048   
4    06 38 22.9  +18 15 15  -304  -57  3  12.775  0.027   0.385  0.014   
5    06 38 26.9  +18 17 21  -246   69  3  13.427  0.028   0.746  0.009   
6    06 38 45.5  +18 15 38    18  -34  3  14.129  0.027   0.856  0.009   
7    06 38 52.8  +18 17 37   123   85  3  14.419  0.022   0.746  0.008   
8    06 38 28.2  +18 16 26  -228   14  3  14.706  0.025   0.566  0.011   
9    06 38 43.2  +18 17 04   -14   52  3  15.062  0.032   0.703  0.002   
10   06 38 43.4  +18 14 54   -11  -78  3  15.618  0.031   0.746  0.004   
11   06 38 46.9  +18 16 58    39   46  3  16.267  0.044   1.164  0.027   
12   06 38 49.4  +18 15 45    74  -27  3  17.303  0.049   0.895  0.049   
13   06 38 51.0  +18 16 03    97   -9  2  18.242  0.051   1.263  0.018   


b) Wide-colour extension for CCD calibration

     06 38 53.0  +18 22 06   125  354  3  12.979  0.023   1.806  0.008   
     06 38 55.9  +18 16 24   167   12  3  12.786  0.020   1.976  0.016   


Notes:

1.  Stars #1 and #2 are is saturated and their magnitude and colour are
approximate. They should be used for guidance only until more accurate
values are determined.

2.  UV Gem is the eastern component of a faint 19th magnitude double 
star, with separation about 6 arcsec. Both components are of almost 
equal magnitude when UV Gem is in quiescence, the variable fairly contant 
at about V=19.0 in minimum and its companion about V=19.1.

3.  There is a preliminary AAVSO(e) chart for this variable with a 
CCD(V) sequence by Kato, et. al., Kyoto University:

                           Star Henden    AAVSO
                                   V        V
                             1   11.100    105            
                             3   12.492    122
                            ext  12.788    126
                             6   14.135    138
                             7   14.424    141
                             9   15.071    146
                            10   15.628    152

4. Superhumps with a period of 0.0902d were detected during the 
superoutburst of December 1999 by Vanmunster 1999, vsnet-alert 3821. 


Bruce Sumner
5 December 2000
Revised 20 January 2001