Terzan 7 C1914-347 
RA: 19:17:43.92 DEC: -34:39:27.8  (J2000)

(Most recent updates: 
Membership probability flag - 2024; Remaining data - July 2016)
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Bytes  Format      Explanation
1-8      A8        Star ID
10-32  A11,1x,A11  Position
34-35    A2        Membership probability flag based on data published
                   by Prudil & Arellano Ferro (2024)
                    m1: prob >=0.85;  m2: prob >=0.7 and <0.85;
                    m3: prob >= 0.5 and <0.7; f: prob <0.5
                    u:  no data available
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, J, K
                    or P (for photographic).
61-65   A5         Type of variable (draft 2006 GCVS classifications)
                      CST denotes non variable stars previously designated
                      as variables
67-80   A19        Notes and Remarks  (f denotes field star)
 
 "--" or "----" indicates no data available
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ID       Position               Mem   Period <mag>  ampl  C Type  Notes/
         RA          Dec        Flag                              Remarks
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No known variables.
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Supplementary Notes

Terzan 7 is probably a member of the Sagittarius dwarf galaxy.
A BV CM diagram by Buonanno et al. (1995) shows a steep red giant branch
and a compact red HB, characteristics of a metal-rich cluster.
A VI CM diagram by Held et al. (2002) shows a well populated blue
straggler sequence. 
Sbordone et al. (2005) derived [Fe/H] = -0.6  from high resolution
UVES-VLT spectra of 5 giant stars.
In the 2010 update to his catalogue, Harris (1996) adopted [Fe/H]= -0.32.
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References

Buonanno, R., Corsi, C. E., Pulone, L., Fusi Pecci, F., Richer, H. B.,
Fahlman, G. G. 1995, AJ, 109, 663

Harris, W. E. 1996, AJ, 112, 1487

Held, E. V., Rosenberg, A., Saviane, I., Momany, Y. 2002, in IAU
Symposium 207, ed. Geisler, Grebel & Minniti,  San Francisco: ASP,
p.165

Prudil Z., Arellano Ferro, A. 2024, MNRAS, 534, 3654

Sbordone, L., Bonifaco, P., Marconi, G., Buonanno, R., Zaggia, S. 2005,
A&A, 437, 905
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