NGC 6517 / C1759-089 (Updated February 2015) RA: 18:01:50.58 DEC: -08:57:31.6 (J2000) ============================================================ 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, 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 ========================================================================= ID Position Period ampl C Type Notes/ RA/X Dec/Y Units Remarks ========================================================================= No known variables. ========================================================================= Supplementary Notes A VI CM diagram by Kavelaars et al. (1995) shows a blue HB and a number of stars that could be blue stragglers. The cluster is [Fe/H]=-1.49 according to the 2010 update to the Harris (1996) catalogue. Paulo Freire's website, (www.naic.edu/~pfreire/GCpsr.html) lists four millisecond pulsars in NGC 6517. According to Lynch et al. (2011), three of them are isolated and PSR J1801-0857B is in a binary system with P=59.8 days. ========================================================================= References Harris, W. E. 1996, AJ, 112, 1487 Kavelaars, J. J., Hanes, D. A., Bridges, T. J., Harris, W. E. 1995, AJ, 109, 2081 Lynch, R. S., Ransom, S. M., Freire, P. C. C., Stairs, I. H. 2011, ApJ, 734, 89 ======================================================================