AM-1 / E1 / C0354-498 (Updated June 2011)) RA: 03:55:02.3 DEC: -49:36:55 (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 Aaronson et al. (1984) published a BV color-magnitude diagram that indicates this object is a globular cluster with a prominent red horizontal branch. A VI color-magnitude diagram by Dotter et al. (2008) confirms this. Thus it is a "second parameter" cluster" in the sense that it has a red HB compared with inner halo clusters with the same metallicity, [Fe/H] = -1.70. The metallicity was derived by Suntzeff et al. (1985) based on the calcium H and K line strengths of two giants. =================================================== References Aaronson, M., Schommer, R. A., Olszewski, E. W. 1984, ApJ, 276, 221 Dotter, A., Sarajedini, A., Yang, S.-C. 2008, AJ, 136, 1407 Suntzeff, N., Olszewski, E., Stetson, P. B. 1985, AJ, 90, 1481 =====================================================================