170  RX J1450.5+6403   (UGSU)   Range: 13.4-17.7V
     Position:   14 50 38.38  +64 03 28.9  (J2000, from .dat file)
     Magnitude:  V=17.709  B-V=-0.207      (Henden, single night)   

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

a) Comparison star sequence

1    14 50 41.0  +64 07 08    17  219  3  11.637  0.158   0.483  0.059   
2    14 50 15.4  +64 07 05  -150  215  5  11.989  0.311   0.453  0.102   
3    14 50 40.0  +64 08 17    10  288  5  12.683  0.174   0.588  0.143   
4    14 50 23.7  +64 04 45   -96   76  5  13.185  0.051   0.664  0.054   
5    14 51 22.2  +64 09 03   286  334  1  13.656  0.002   0.885  0.003   
6    14 51 17.9  +64 02 03   259  -86  5  14.164  0.016   0.987  0.006   
7    14 50 25.0  +64 04 00   -88   31  5  14.795  0.020   0.726  0.007   
8    14 50 43.0  +64 05 47    30  138  6  15.708  0.019   0.810  0.006   
9    14 50 13.3  +64 01 11  -165 -138  5  16.182  0.018   0.653  0.012   
10   14 51 07.2  +64 08 48   188  319  5  17.046  0.022   0.684  0.011   
11   14 50 18.8  +64 02 13  -128  -76  5  17.576  0.020   0.695  0.060   


b) Wide-colour extension for CCD calibration

     14 49 48.2  +63 59 04  -330 -265  1  14.833  0.004   0.458  0.006   
     14 50 59.7  +63 59 28   140 -241  5  14.670  0.018   0.592  0.003   
     14 50 54.7  +64 03 15   107  -14  5  15.676  0.018   1.366  0.009   
     14 50 07.6  +64 02 26  -202  -63  5  15.743  0.017   1.461  0.014   

    
Notes:

1. Stars #1, #2 and #3 are saturated, and their magnitudes and 
colours are approximate. They are only accurate to about 0.2 
magnitude.

2. The quiescent magnitude of this variable given in the header 
information is the faintest magnitude obtained when the variable 
was at quiescence. Data from other nights when the variable was at 
minimum show a variation between V=17.1 to V=17.7. This is possibly 
a result of eclipses due to orbital modulation.  

3. This variable was originally know as FBS 1449+642.


Bruce Sumner
11 July 2000
Revised 27 January 2001