[vsnet-id 292] V730 Sgr sequence

["Bruce Sumner" <b.sumner@bom.gov.au>]

Here is a sequence for V730 Sgr.
Regards,
Bruce Sumner
-------------------------------
169  V730 SAGITTARII   (UGSS:)   Range: 13.6-16.5p
     Position:   19 23 00.97  -28 29 37.4 (J2000, from .dat file)
     Magnitude:  V=14.076  B-V=0.053      (from .dat file)

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

a) Comparison star sequence

1   19 23 03.6  -28 32 44    34 -187  2  11.384  0.012   0.340  0.012 
2   19 23 09.6  -28 33 54   113 -257  1  12.035  0.001   0.604  0.001 
3   19 22 42.0  -28 25 06  -250  271  1  12.823  0.001   0.745  0.001 
4   19 23 01.9  -28 29 49    12  -12  1  13.348  0.001   0.669  0.001 
5   19 23 26.6  -28 30 17   338  -40  1  13.507  0.001   0.658  0.002 
6   19 23 19.6  -28 27 13   245  144  1  13.838  0.002   0.808  0.003 
7   19 22 56.5  -28 29 53   -60  -16  1  14.178  0.002   0.602  0.003 
8   19 23 16.7  -28 29 40   207   -3  1  14.464  0.002   0.586  0.003 
9   19 22 59.6  -28 30 21   -18  -44  1  14.903  0.003   0.720  0.004 
10  19 23 00.4  -28 29 52    -8  -15  1  15.064  0.003   0.489  0.005 
11  19 23 08.9  -28 29 40   104   -3  1  15.480  0.004   0.730  0.006 
12  19 23 00.7  -28 31 13    -4  -96  1  16.114  0.007   0.931  0.011 
13  19 23 04.4  -28 29 29    44    8  1  16.495  0.008   0.785  0.014 
14  19 22 59.7  -28 29 41   -17   -4  1  17.572  0.024   1.228  0.066 
  
b) Wide-colour extension for CCD calibration  
    
    19 23 24.8  -28 26 22   314  195  1  16.464  0.009   0.143  0.011 
    19 22 45.7  -28 29 20  -202   17  1  14.443  0.002   0.277  0.003 
    19 22 44.2  -28 27 20  -222  137  1  14.363  0.002   1.569  0.004 
    19 23 04.2  -28 34 29    42 -292  1  12.812  0.001   1.572  0.002 

Notes:

1. Stars 1 and 2 are saturated and their magnitudes should be used 
for guidance only.

2. An examination of seven Schmidt images taken between 1954 and 1991 
available at the USNO PMM archive site implies that this variable 
does not have a deep minimum. Most images show the variable about 
magnitude 15.0-15.5B, with only two images showing it as faint as 
magnitude 16.5B. A classification of UGSS is quite probable.  

Bruce Sumner
10 September 2000

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