Stars in Trumpler 21 appear in SIMBAD with a mix of accurate and approximate coordinates; six stars from a follow-up study by Peterson & FitzGerald appear without coordinates, though the photometry is present. Otherwise things look fine, though a few Cordoba names are missing. The Lynga/SIMBAD/WEBDA position for the cluster center is okay, but can be reasonably defined to be that of HD 117513 (star 2). Previously I determined the center to be midway between this star and HD 117492 (star 1), i.e. 13 32 14 -62 47.2. Either one is close enough to the center of the main body to be useful. ------------------------------------------------------------------------------- Coordinates and identifications for stars in Trumpler 21 version: 21 Jan 2002 sources: 1973A&AS...10..135M (stars 1-17) 1988MNRAS.235.1439P (stars 18-24) cluster center = HD 117513 (star 2): 13 32 16 -62 47.7 (J2000) position source (column 's'): U UCAC1 (2000AJ....120.2131Z, I/268) Name RA (J2000) Dec s GSC Tycho-2 V remarks 1 13 32 10.53 -62 46 51.2 U 8995-0939 8995- 939-1 8.9 HD 117492 2 13 32 16.41 -62 47 43.2 U 8995-1099 8995-1099-1 9.0 HD 117513 = CD-62 734 3 13 32 10.91 -62 47 45.5 U 8995-1155 8995-1155-1 10.5 CPD-62 3330 = CD-62 733 4 13 32 13.96 -62 47 14.3 U 8995-1355 8995-1355-1 11.2 CPD-62 3332 5 13 32 24.61 -62 47 23.6 U 8995-1271 8995-1271-1 11.9 6 13 32 32.16 -62 47 12.8 U 8995-0563 12.1 7 13 32 38.94 -62 46 29.8 U 8995-1855 8995-1855-1 11.7 8 13 32 03.81 -62 46 37.0 U 8995-2773 8995-2773-1 11.8 CPD-62 3327 9 13 32 03.44 -62 48 24.8 U 8995-0815 8995- 220-1 11.5 10 13 31 58.44 -62 48 45.6 U 8995-2293 8995-2293-1 11.1 CPD-62 3325 11 13 32 05.53 -62 47 10.5 U 8995-0675 12.4 12 13 32 19.14 -62 47 14.7 U 8995-0448 12.7 13 13 32 13.72 -62 47 57.0 U 8995-1037 13.3 14 13 32 02.07 -62 48 45.4 U 8995-0220 8995- 220-1 12.0 15 13 32 19.28 -62 48 34.8 U 8995-1149 13.4 16 13 32 10.34 -62 48 30.1 U 8995-1369 12.9 17 13 32 34.77 -62 47 32.4 U 8995-0855 12.9 18 13 32 26.03 -62 48 08.9 U 8995-0879 13.4 19 13 32 01.63 -62 45 42.2 U 8995-2699 12.9 20 13 32 08.40 -62 45 30.4 U 8995-1485 13.0 21 13 32 12.78 -62 46 21.2 U 8995-0609 14.1 22 13 31 48.35 -62 48 14.6 U 8995-2447 12.4 23 13 32 23.96 -62 45 11.1 U 8995-0949 13.1 24 13 32 40.50 -62 45 44.3 U 8995-2055 13.3