217  W COMAE   (BLLAC)   Range: 13.4v-15.4v
     Position:   12 21 31.69  +28 13 59.0   (J2000, from .dat file)
     Magnitude:  V=14.293  B-V=0.368        (.dat file, single night)

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

a) Comparison star sequence

1    12 21 33.7  +28 13 05    26  -55  1  12.071  0.001   0.586  0.001   
2    12 21 13.9  +28 13 05  -236  -54  1  13.091  0.001   0.585  0.001   
3    12 21 54.6  +28 17 56   303  237  1  13.488  0.001   0.789  0.002   
4    12 21 52.2  +28 09 40   271 -259  1  14.677  0.002   0.579  0.003   
5    12 21 28.6  +28 16 38   -41  159  1  14.818  0.003   1.488  0.005   
6    12 22 06.5  +28 10 16   460 -223  1  16.111  0.005   0.561  0.007   
7    12 21 27.8  +28 14 38   -51   39  1  17.688  0.019   0.694  0.027   


b) Wide-colour extension for CCD calibration

None available


Notes:

1. This is a single night sequence, and the errors are expected to be in
the order of 0.02 magnitude.

2. There is a bright star at 12h 21m 52.2s +28d 09' 00" with a reliable
Tycho-2 magnitude of 10.11+/-0.03.


Bruce Sumner
2 April 2001