Tonantzintla 2 / Pismis 26 / C1733-390 (Updated 2009) RA: 17:36:10.5 DEC: -38:33:12 (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 or P (for photographic). 61-65 A5 Type of variable (draft 2006 GCVS classifications) NV denotes not variable 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 ========================================================================= 1 71.78 63.25 XA ---- -- -- 2 80.85 49.5 XA ---- -- -- ==================================================================== Supplementary Notes and References VI photometry by Bica et al. (1996, A&ASuppl, 120, 153) shows the colour-magnitude diagram has a red HB. These authors did not discuss the variable stars. ============================================================ Discovery of the Variable Stars in Tonantzintla 2: V1-2 Fourcade, Laborde & Albarracin (1966, Atlas y Catalogo, Cordoba) with x,y positions and ID chart ===================================================