Terzan 6 / Haute Provence 5/ C1747-312 (Updated July 2016) RA: 17:50:46.38 DEC: -31:16:31.4 (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 Terzan 6 is a heavily reddened cluster in the inner bulge region. According to the 2010 update to the Harris (1996) catalogue, Terzan 6 is a core-collapsed cluster. A near infrared [K,J-K] CM diagram by Valenti et al. (2007) shows a red HB. From their data, they derived a photometric [Fe/H] = -0.62. According to Bahramian et al. (2016), GRS 1747-312 is a low mass X-ray binary in Terzan 6. ====================================================================== References Bahramian, A., Heinke, C. O., Sivakoff, G. R., Kennea, J. A., Wijnands, R., Altamirano, D. 2016, Ast. Tel., No. 9072 Harris, W. E. 1996, AJ, 112, 1487 Valenti, E., Ferraro, F. R., Origlia, L. 2007, AJ, 133, 1287 ======================================================================