203  V823 CYGNI   (UGSU)   Range: 15.0-<18.5p
     Position:   20 01 49.3   +36 07 24   (J2000, from DWS 2001)
     Magnitude:  unknown

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

a) Comparison star sequence
 
1    20 02 09.4  +36 11 24   240  238  2  11.548  0.245   0.361  0.052   
2    20 01 39.9  +36 08 06  -117   40  2  13.115  0.006   0.603  0.013   
3    20 01 48.0  +36 07 10   -18  -16  3  13.771  0.052   0.799  0.008   
4    20 01 37.7  +36 05 58  -143  -88  2  14.264  0.056   0.904  0.013   
5    20 01 59.1  +36 05 50   116  -96  2  14.644  0.032   0.929  0.019   
6    20 01 59.4  +36 06 50   119  -36  2  14.977  0.021   0.637  0.021   
7    20 01 42.7  +36 08 48   -82   82  2  15.424  0.049   0.799  0.044   
8    20 01 44.7  +36 06 49   -59  -37  2  15.858  0.036   0.970  0.017   
9    20 01 51.3  +36 07 18    22   -8  2  16.404  0.028   1.090  0.057   
10   20 01 49.0  +36 06 46    -6  -40  2  16.990  0.099   1.089  0.001   


b) Wide-colour extension for CCD calibration

     20 01 43.2  +36 04 46   -77 -160  2  13.738  0.017   0.474  0.017   
     20 02 13.6  +36 11 35   291  249  2  12.930  0.020   0.568  0.030   
     20 02 07.0  +36 12 34   212  308  2  13.458  0.044   1.951  0.021   
     20 01 38.4  +36 06 30  -134  -56  2  12.271  0.006   2.042  0.074
     20 01 43.3  +36 11 31   -75  245  2  12.583  0.050   2.124  0.025


Notes:

1. V823 Cyg has a companion located 10 arcsec to the northwest. It is 
quite red with V=15.727+/-0.031 and B-V=1.631+/-0.012.

2. From DSS V823 Cyg would seem to be about magnitude 19.5 in quiescence.

3. One of the wide-colour extension stars is a suspected variable star.
This is the star with a magnitude of V=12.271. It is catalogued as 
NSV 12716, type unknown and magnitude 13.03B.

4. There is a bright star to the east of the variable at 01h 20m 02.9s 
+36d 06' 36" with a reliable Tycho-2 magnitude of V=9.39+/-0.02.


Bruce Sumner
1 February 2001