175  LD 345   (E)   Range: 11.4-16.8p
     Position:   18 31 13.84  +46 58 35.2   (J2000, from .dat file)
     Magnitude:  V=11.768   B-V=1.607       (in .dat file)
                                                            
ID      RA  (2000)   DEC       X    Y  N    V      ERR     B-V    ERR

a) Comparison star sequence

1    18 31 06.4  +46 55 53   -76 -162  4  11.919  0.014   1.126  0.011   
2    18 31 02.9  +46 58 16  -112  -19  4  12.164  0.013   0.974  0.006   
3    18 31 32.7  +47 00 56   193  141  4  12.426  0.019   0.429  0.008   
4    18 30 58.9  +47 03 52  -153  317  4  12.895  0.015   0.632  0.002   
5    18 31 21.5  +46 56 59    79  -96  4  13.576  0.017   0.947  0.005   
6    18 31 10.6  +46 55 13   -33 -202  4  14.090  0.020   0.637  0.005   
7    18 30 53.5  +47 00 56  -208  141  4  14.393  0.017   0.575  0.008   
8    18 31 08.1  +47 00 14   -58   99  4  14.717  0.023   0.595  0.018   
9    18 31 28.3  +46 58 53   148   18  4  15.161  0.010   0.685  0.021   
10   18 31 21.0  +46 58 02    73  -33  4  15.806  0.014   0.705  0.039   
11   18 31 10.2  +46 56 13   -36 -143  4  16.607  0.040   0.740  0.035   


b) Wide-colour extension for CCD calibration
 
     18 31 37.7  +46 59 46   244   71  4  14.595  0.023   0.331  0.011   
     18 31 23.1  +47 02 07    95  212  4  16.186  0.037   0.487  0.043   
     18 31 02.9  +46 55 11  -112 -204  4  15.832  0.038   1.482  0.031   
     18 31 08.7  +47 00 00   -52   85  4  16.316  0.037   1.485  0.068   


Notes:

1. Ondrej Pejcha published a preliminary sequence [vsnet-sequence 17], 
based on Tycho-2 and GSC data. Only stars with a star number are part 
of this new sequence. 

                         Henden           Pejcha
                 Star   V      B-V       v    b-v
                      12.147  0.634    12.14  0.52  TYC-2
                  3   12.426  0.429    12.37  0.52  TYC-2
                  5   13.576  0.947    13.5         GSC
                      13.799  0.588    13.8         GSC
                  6   14.090  0.637    14.1         GSC
                  7   14.393  0.575    14.4         GSC
                  8   14.717  0.595    14.8         GSC

2. Pejcha's 12.87 (TYC-2) and 13.2 (GSC) were not measured as they 
were outside the photometric field of this sequnce and are replaced 
with more appropriate comparison stars. Pejcha also has four Tycho-2 
stars that extend the sequence at the bright end from magnitude
11.7 to 10.7, but it should be noted that Tycho-2 magnitudes are not
accurate in this range.

3. There is a bright Tycho-2 star on the northeast corner of this field
with an accurate magnitude of V=9.70+/-0.02.

4. The history and variability of LD 345 are very well discussed in the
IBVS Circular of 13 July 2000.


Bruce Sumner
19 July 2000