201  TY VULPECULAE   (UG)   Range: 14-19p
     Position:   20 41 44     +25 35 11    (J2000, from DSS)
     Magnitude: unknown

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

a) Comparison star sequence
 
1    20 42 10.0  +25 33 46   351 -124  2  11.009  0.373   0.854  0.048   
2    20 41 28.9  +25 40 56  -206  306  2  11.759  0.262   1.064  0.218   
3    20 41 57.9  +25 31 56   187 -234  2  12.583  0.036   0.584  0.032   
4    20 41 35.5  +25 35 53  -116    3  2  12.896  0.008   0.678  0.015   
5    20 41 54.0  +25 38 10   134  140  2  13.216  0.026   1.098  0.026   
6    20 41 41.0  +25 34 18   -42  -92  2  13.781  0.020   1.055  0.021   
7    20 41 20.8  +25 37 16  -316   86  2  14.215  0.023   1.102  0.016   
8    20 41 47.8  +25 36 15    50   25  2  14.476  0.006   0.602  0.016   
9    20 41 39.0  +25 35 20   -69  -30  2  15.021  0.000   0.706  0.018   
10   20 41 44.2  +25 36 22     1   32  2  15.533  0.045   0.799  0.025   
11   20 41 43.1  +25 36 04   -13   14  2  15.752  0.006   0.722  0.020   
12   20 41 48.2  +25 35 10    56  -40  2  15.977  0.036   0.858  0.021   
13   20 41 43.8  +25 35 09    -5  -41  2  16.794  0.109   0.750  0.058   
14   20 41 44.0  +25 35 40    -2  -10  3  17.551  0.084   0.908  0.032   


b) Wide-colour extension for CCD calibration
 
     20 41 42.1  +25 40 43   -26  293  2  13.595  0.024   0.182  0.031   
     20 42 03.5  +25 40 19   263  269  2  13.500  0.017   0.407  0.030   
     20 41 20.9  +25 34 23  -314  -87  2  14.142  0.034   1.622  0.020   
     20 41 24.3  +25 40 48  -268  298  2  13.347  0.006   1.753  0.033 


Notes:

1. TY Vul is not yet identified, but it would appear to be very faint 
at minimum, possibly around magnitude 21.

2. Star #1 and #2 are saturated and their magnitudes and colours are
approximate. Star #1 has a reliable Tycho-2 magnitude of 10.56+/-0.06. 
Star #2 should only be used for guidance until an accurate magnitude 
is determined.


Bruce Sumner
22 January 2001