NGC 6273 / C1659-262 / Messier 19
(Updated 2009)

RA: 17:02:37.80  DEC: -26:16:04.7 (J2000)

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Bytes  Format      Explanation
1-8      A8        Star ID
10-32  A11,1x,A11  Position
34-35    A2        Units for position
                    R0 denotes RA, DEC in the J2000 coordinates
                    R5 denotes RA, DEC in the 1950 coordinates
                    XA denotes X, Y in arcseconds 
                    XP denotes X, Y in pixels
37-44   F8.4       Period  (days)
46-51   F6.3       Mean magnitude (or maximum magnitude if "max" 
                      is indicated in the remarks column)
53-57   F5.3       Light amplitude  (range of variability)
59      A1         Colour for mean magnitude and amplitude
                    e.g.  B, V, R, I 
                    or P (for photographic).
61-65   A5         Type of variable (draft 2006 GCVS classifications)
                      NV denotes not variable
67-80   A19        Notes and Remarks  (f denotes field star)
 
 "--" or "----" indicates no data available
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ID       Position                     Period <mag>  ampl  C Type  Notes/
         RA/X        Dec/Y     Units                              Remarks
=========================================================================
1         4           48         XA  16.92   13.85  1.4   B CW    
2         14          123        XA  14.139  14.15  1.6   B CW    Note
3        -28         -6          XA  16.5    13.7   1.4   B CW    
4        -4          -33         XA   2.4326 14.75  1.5   B CW    
5        -77         -178        XA   0.5072 16.2   1.5   B RR0   
6         347         421        XA   0.5928 15.8   1.4   B RR0   
7        -375         153        XA   0.2444 14.53  0.45  B RR1   f
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Supplementary Notes and References

All of the positions, periods, magnitudes, amplitudes and variability 
types listed above are from Clement and Sawyer Hogg, AJ 83 p.167 (1978)


Notes on individual stars

V1: Samus (1984, IBVS, 2555) showed that V2=FK Oph

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Discovery of the variable stars in M19:

  V1-V4, V6=F1
   Sawyer (1943, Publ DDO 1, 14) with x,y positions and ID chart
   
  V5
   announced by Coutts et al. (1975, BAAS 7, 536) with x,y position
     and ID chart published by Clement & Sawyer Hogg (1978, AJ 83, 167))

  V7= SVS 2155 
   Samus, (1976, Astron. Tsirk. 900) with ID chart and 1950 RA and dec 

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