NGC 6496/ C1755m442
RA: 17:59:03.68 DEC: -44:15:57.4  (J2000)

(Most recent updates: 
Membership probability flag - 2024; Remaining data - January 2015)
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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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1        17:58:55.88 -44:14:19.4 m1  69.0    14.98  1.29  V SR
2        17:59:12.94 -44:17:20.5 m1  55.0    14.87  0.74  V Lb
3        17:59:17.99 -44:16:24.4 m1  37.0    14.20  0.64  V Lb    Note
4        17:58:56.91 -44:15:51.7 m1  73.0    14.98  0.62  V Lb
5        17:59:02.55 -44:14:08.3 m1  85.0    14.46  0.66  V Lb
6        17:58:56.47 -44:19:36.4 f   48.0    13.84  0.44  V Lb    f?
7        17:59:28.01 -44:17:26.7 f  --       12.85  0.06  V Lb?   f
8        17:59:05.82 -44:21:39.1 u  --       15.16  0.14  V Lb?   f
9        17:58:34.68 -44:14:47.1 u    0.7666 15.63  0.27  V EW?
10       17:59:23.14 -44:19:27.2 f    0.2897 15.96  0.96  V EW
11       17:58:30.75 -44:16:51.4 u    0.3371 14.76  0.56  V EW?
12       17:59:05.67 -44:12:58.0 f    0.884  16.04  0.42  V EW?
13       17:58:40.44 -44:19:23.9 u    0.4385 15.64  1.01  V EB
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Supplementary Notes 

The data in the above table are from the discovery paper by Abbas et al.
(2015).

CM diagrams published by Fraga et al. (2013) and Abbas et al. (2015)
show a prominent red clump on the horizontal branch, characteristic of a 
metal rich cluster.  No RR Lyrae variables have been discovered.
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Notes on individual stars

V3:  Abbas et al. (2015) noted that this star shows a short-period, 
     low-amplitude variation on top of a much longer periodicity 
     (340 days).
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Discovery of the variable stars in NGC 6496

V1-13: Abbas et al. (2015) with RA, dec and ID charts

       Abbas et al. also investigated star ASAS 175901-4411.5
       (Pojmanski & Maciejewski 2004) which was in their field of
       view, at a projected angular distance of 4.4 arcmin from the
       cluster centre.  They concluded that it was too bright to be 
       a cluster member.
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References

Abbas, M. A., Layden, A. C., Guldenhschuh, K. A., Reichart, D. E.,
Ivarsen, K. M., Haislip, J. B., Nysewander, M. C. and 2 coauthors,
2015, AJ, 149, 40

Fraga, L., Kunder, A., Tokovinin, A. 2013, AJ, 145, 165

Pojmanski, G. & Maciejewski, G. 2004, Acta A., 54, 153

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

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