Palomar 15 / C1657-004
RA: 16:59:51.0   DEC: -00:32:20  (J2000)

(Most recent updates: 
Membership probability flag - 2024; Remaining data - March 2014)
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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 

A variable star search of Pal 15 was carried out by Kinman & Rosino (1962).
In their paper, the cluster was referred to as "Anon". 
They searched 9 photographic plates which  had a limiting magnitude of
m_pg=22 mag.  No variables were found.

A CM diagram by Harris (1991) based on CFHT data shows a blue HB and a 
significant number of blue stragglers.  This result was later confirmed 
by Dotter et al. (2011) who used HST data.
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References

Dotter, A., Sarajedini, A., Anderson, J. 2011, ApJ, 738, 74

Harris, W. E. 1991, AJ, 102, 1348 

Kinman, T. D. & Rosino, L. 1962, PASP, 74, 499 

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

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