The sparse southern open cluster NGC 2571 contains numerous suspected variables reported by Kilambi (1978PASP...90..721K). For the most part these have accurate (if not precise) coordinates in the GCVS v4.1. The lists below link the NSV names to three lists of stars in cluster measured photometrically, and for which accurate coordinates have not been available. The recent work by Giorgi et al. (2002A&A...381..884G) contains coordinates and UBVI photometry for many faint stars, but omits others that appear in the three earlier papers. I show below precise coordinates for all the stars given on the charts by Claria, Kilambi, and Lindoff. External IDs have been made with GSC, Tycho-2, HD, CD, CPD, and the GCVS v4.1. All the coordinates come from either UCAC1 or 2MASS. Kilambi extended Claria's numbering sequence, so I show only stars 50 to 167 from his list, and omit those without photometry. I show his V magnitude rounded to 0.1 precision, which can be used when there is no other data (viz. from Giorgi et al.). Comparison with Giorgi indicates the Kilambi photographic photometry is not of high accuracy. For Lindoff's stars I also show his photographic V magnitudes rounded to 0.1-mag. precision. Lindoff states that his results were rather poor, which is evident from his color-magnitude diagrams and evolutionary-deviation curve. The spectral types he estimated are given since these are not in SIMBAD (these seem to be reasonably consistent with the photometry). \Brian =============================================================================== Coordinates and identifications for stars in NGC 2571 version: 10 Dec 2002 source: 1976PASP...88..225C CLARIA J.J. Publ. Astron. Soc. Pac., 88, 225-231 (1976) Basic parameters of the open cluster NGC 2571. Dictionary: Table I: <Cl* NGC 2571 C NN> (Nos 1-49). cluster center: 8 18 57 -29 45.5 (J2000) position sources (column 's'): M 2MASS second release (B/2mass/out) U UCAC1 (2000AJ....120.2131Z, I/268) C RA (J2000) Dec s GSC Tycho-2 HD/CD CPD/NSV 1 8 18 58.66 -29 45 16.8 U 6568-3016 6568-3016-1 HD 70078 2 8 18 55.21 -29 44 42.0 U 6568-2262 6568-2262-1 HD 70058 3 8 19 14.38 -29 46 10.5 U 6568-0627 6568- 627-1 CD-29 5941 NSV 17854 4 8 18 58.61 -29 49 01.2 U 6568-1855 6568-1855-1 CD-29 2934 5 8 19 04.55 -29 44 17.1 U 6568-2807 6568-2807-1 CD-29 5938 6* 8 18 47.19 -29 42 19.7 U 6568-1209 6568-1209-1 CD-29 5925 NSV 17831 7 8 18 46.62 -29 45 01.1 U 6568-2698 6568-2698-1 CD-29 5924 8 8 18 26.95 -29 42 09.6 U 6568-2729 6568-2729-1 CD-29 5911 NSV 17824 9 8 18 40.69 -29 43 30.8 U 6568-2280 6568-2280-1 CD-29 5919 10 8 18 56.18 -29 48 28.8 U 6568-2356 6568-2356-1 CD-29 5929 NSV 17841 11 8 19 14.60 -29 48 03.8 U 6568-2357 6568-2357-1 CD-29 5943 12 8 19 10.90 -29 46 59.7 U 6568-2108 6568-2108-1 NSV 17853 13 8 18 49.32 -29 45 12.1 U 6568-2606 6568-2606-1 CPD-29 2482 14 8 18 44.34 -29 50 32.7 U 6568-2404 6568-2404-1 CD-29 5920 CPD-29 2480 15 8 19 19.83 -29 48 15.7 U 6568-2040 6568-2040-1 16 8 19 03.93 -29 45 04.2 U 6568-1091 17 8 18 51.19 -29 45 37.3 U 6568-1494 6568-1494-1 NSV 17836 18 8 18 44.85 -29 41 44.8 U 6568-1149 6568-1149-1 NSV 17830 19 8 18 37.69 -29 43 58.5 U 6568-0663 6568- 663-1 NSV 17826 20 8 18 50.45 -29 49 37.5 U 6568-2789 6568-2789-1 21 8 19 03.93 -29 50 45.4 U 6568-2302 6568-2302-1 22* 8 18 59.62 -29 45 27.2 U NSV 17845 23 8 18 30.73 -29 42 26.4 U 6568-1289 6568-1289-1 CD-29 5913 24 8 18 38.98 -29 41 20.1 U 6568-2806 6568-2806-1 25 8 18 54.77 -29 44 05.8 U 6568-2364 NSV 17839 26 8 18 49.68 -29 46 13.4 U 6568-2644 6568-2644-1 27 8 18 36.31 -29 47 54.7 U 6568-1300 6568-1300-1 28 8 18 34.45 -29 44 49.1 U 6568-1895 6568-1895-1 29 8 18 48.14 -29 46 14.4 U 6568-1719 30 8 18 59.98 -29 48 15.0 U 6568-2343 6568-2343-1 31 8 18 44.71 -29 45 44.7 U 6568-2222 NSV 17829 32 8 18 57.34 -29 44 23.5 M 6568-1236 33 8 18 41.93 -29 43 23.7 M 6568-1797 34 8 18 53.23 -29 44 59.4 M 6568-2704 NSV 17838 35* 8 18 52.44 -29 41 17.0 M 6568-3107 36 8 18 46.01 -29 42 13.3 U 6568-1145 37 8 18 40.58 -29 47 50.8 U 6568-1759 NSV 17827 38 8 19 04.37 -29 49 21.8 U 6568-2335 NSV 17850 39 8 18 58.18 -29 43 56.4 U 6568-2486 NSV 17843 40 8 18 46.21 -29 48 55.0 U 6568-1226 41* 8 19 04.22 -29 47 30.5 U 6568-1776 NSV 17849 42* 8 18 57.28 -29 43 19.2 U 6568-1901 NSV 17842 43* 8 19 05.43 -29 48 54.2 M 6568-2418 NSV 17851 44 8 18 48.66 -29 48 44.1 U NSV 17833 45* 8 18 53.02 -29 41 14.8 M 6568-2777 6568-2777-1 NSV 17837 46* 8 18 58.40 -29 46 36.2 U 6568-0223 6568- 223-1 NSV 17844 47 8 18 48.12 -29 43 27.8 U 6568-2829 NSV 17832 48* 8 19 00.07 -29 46 53.6 U 6568-1324 NSV 17846 49 8 18 55.92 -29 47 25.4 U 6568-0715 Notes 6 not CPD-29 2482 as per SIMBAD. 22 Claria chart mismarked. 35 southwestern star of 8" pair with star 45. 41 northeastern star of 6" pair. 42 northern star of 6" pair. 43 easternmost star of 9" trio. 45 northeastern star of 8" pair with star 35. 46 southern star of 7" pair. 48 western star of 6" pair. ------------------------------------------------------------------------------- source: 1978PASP...90..721K KILAMBI G.C. Publ. Astron. Soc. Pac., 90, 721-727 (1978) UBV analysis of the open cluster NGC 2571. Dictionary: Table I: <Cl* NGC 2571 C NNN> (Nos 50-167) added. C RA (J2000) Dec s GSC Tycho-2 V NSV 50 8 19 28.98 -29 48 11.9 U 6568-2596 6568-2596-1 12.0 51 8 19 23.01 -29 48 31.1 U 14.1 52 8 19 17.73 -29 48 28.4 U 6568-1557 14.1 53 8 19 19.42 -29 47 33.1 U 13.6 54 8 19 29.00 -29 46 52.4 U 13.4 55 8 19 23.02 -29 46 34.2 U 6568-1635 13.2 56 8 19 18.06 -29 46 50.2 U 13.4 57 8 19 25.12 -29 45 07.5 U 6568-1612 12.4 58 8 19 12.54 -29 46 10.4 U 6568-2770 13.1 59 8 19 12.52 -29 45 48.4 U 13.9 60 8 19 19.02 -29 44 24.2 U 6568-2809 12.7 61 8 19 21.41 -29 44 03.4 U 14.0 62 8 19 28.32 -29 43 29.1 U 6568-0875 13.0 63 8 19 26.81 -29 43 39.4 U 13.6 64 8 19 19.37 -29 42 54.3 U 6568-2782 12.5 65* 8 19 23.2 -29 41 52 M 6568-2817 13.9 66 8 19 23.24 -29 41 30.3 U 14.0 67 8 19 20.92 -29 41 00.1 U 6568-1217 6568-1217-1 12.0 68 8 19 19.23 -29 41 27.7 U 6568-2714 12.4 69 8 19 14.96 -29 40 43.5 U 14.0 70 8 19 10.16 -29 41 38.8 U 14.1 73 8 19 07.96 -29 43 01.9 U 13.7 74 8 19 05.98 -29 42 59.9 U 14.1 75 8 19 05.36 -29 41 09.1 U 13.1 77 8 19 02.76 -29 42 10.8 U 13.6 79 8 18 57.97 -29 39 45.7 U 13.5 80 8 18 56.50 -29 40 16.7 U 13.7 81 8 18 54.35 -29 40 09.3 U 13.3 82 8 19 01.52 -29 38 48.4 U 6568-1394 6568-1394-1 12.3 83 8 18 53.99 -29 38 53.4 U 6568-2727 6568-2727-1 12.1 84 8 18 48.79 -29 39 07.0 U 6568-0465 13.8 85 8 18 40.30 -29 39 41.2 U 6568-2759 12.2 88 8 18 58.29 -29 42 46.1 U 6568-2662 13.8 92 8 18 44.65 -29 41 35.1 M 6568-2467 14.1 93 8 18 43.15 -29 42 04.1 U 14.1 94 8 18 42.37 -29 42 10.2 U 13.8 NSV 17828 97 8 18 21.91 -29 44 29.0 U 13.7 98 8 18 25.02 -29 44 08.4 U 14.1 99 8 18 26.84 -29 43 49.1 U 13.4 101 8 18 34.83 -29 42 59.9 U 14.2 102 8 18 30.10 -29 44 14.5 U 13.8 103 8 18 27.97 -29 45 04.3 U 14.0 104 8 18 23.32 -29 45 54.4 U 12.9 107 8 18 18.46 -29 43 39.5 U 6568-0585 13.0 108 8 18 17.04 -29 43 10.5 U 13.6 NSV 17821 109 8 18 15.85 -29 42 45.6 U 6568-1193 13.1 110 8 18 27.06 -29 46 45.8 U 6568-2432 12.0 111 8 18 31.18 -29 47 00.9 U 13.3 113 8 18 36.69 -29 46 40.4 U 13.9 115 8 18 39.64 -29 46 10.1 U 14.2 116 8 18 39.22 -29 45 54.3 U 6568-1308 14.1 118 8 18 31.73 -29 45 32.6 U 6568-2445 12.9 120 8 18 43.52 -29 45 38.4 U 13.8 125 8 18 29.56 -29 48 38.8 U 14.0 127 8 18 32.52 -29 49 48.0 U 6568-0531 13.2 131 8 18 52.36 -29 47 27.6 U 14.0 136 8 18 40.01 -29 52 37.1 U 6568-1105 6568-1105-1 11.5 137 8 18 41.55 -29 51 59.5 U 13.7 138 8 18 41.16 -29 50 39.5 U 6568-3116 12.7 139 8 18 41.84 -29 50 24.7 U 6568-2414 13.4 140 8 18 48.45 -29 50 59.2 U 6568-1573 11.8 141* 8 18 47.64 -29 52 14.7 U 6568-0353 13.6 144 8 18 46.28 -29 49 13.3 U 6568-2837 13.7 145 8 18 50.13 -29 50 15.6 M 6568-2224 13.0 146 8 18 52.62 -29 51 24.9 U 6568-1944 11.8 148 8 18 52.27 -29 50 22.4 U 6568-3097 13.4 149 8 18 56.26 -29 48 44.2 M 6568-2249 13.7 150 8 18 56.26 -29 52 56.4 U 6568-2194 6568-2194-1 11.8 151 8 18 56.11 -29 52 32.1 U 13.8 152 8 19 01.24 -29 51 30.0 U 6568-2595 12.2 153 8 19 02.37 -29 51 56.0 U 14.1 154 8 19 04.61 -29 51 10.8 M 6568-2663 12.8 155 8 19 04.81 -29 51 00.7 M 6568-2493 14.1 156 8 19 07.46 -29 49 15.4 U 14.0 157 8 19 11.54 -29 48 34.5 U 13.9 158 8 19 10.56 -29 49 32.3 U 6568-1775 13.5 159 8 19 17.71 -29 50 01.9 U 6568-1328 12.5 160 8 19 16.96 -29 49 53.9 M 6568-2462 13.1 NSV 17855 163 8 19 12.05 -29 52 09.5 U 14.1 165 8 19 10.50 -29 43 46.4 U 13.9 167 8 18 55.31 -29 44 52.4 M 13.4 NSV 17840 Notes 65 mean position for 6" pair. 141 southeastern/brighter star of 7" pair. ------------------------------------------------------------------------------- source: 1968ArA.....4..587L LINDOFF U. Arkiv for Astron., 4, 587-611 (1968) The open clusters NGC 2533, NGC 2567, NGC 2571, and Ru 58. Dictionary: <NGC 2571 NNN> (Nos 1-112) Name RA (J2000) Dec s GSC Tycho-2 V MK remarks 1 8 19 03.11 -29 46 17.8 U 14.6 2 8 19 03.60 -29 47 19.2 U 14.5 3 8 19 04.22 -29 47 30.5 U 6568-1776 12.9 NSV 17849 4 8 18 55.92 -29 47 25.4 U 6568-0715 14.1 5 8 19 00.07 -29 46 53.6 U 6568-1324 13.7 NSV 17846 6 8 18 58.40 -29 46 36.2 U 6568-0223 6568- 223-1 13.4 NSV 17844 7 8 18 58.45 -29 46 29.3 M 14.4 8* 8 18 59.49 -29 45 43.6 M 6568-1498 13.4 9 8 18 59.62 -29 45 27.2 U 11.8 B6 NSV 17845 10 8 18 58.66 -29 45 16.8 U 6568-1477 6568-3016-1 8.8 HD 70078 11 8 19 03.93 -29 45 04.2 U 6568-1091 11.9 B8 12 8 19 04.55 -29 44 17.1 U 6568-2807 6568-2807-1 10.6 B4 CD-29 5938 13 8 18 58.18 -29 43 56.4 U 6568-2486 12.9 NSV 17843 14 8 18 57.34 -29 44 23.5 M 6568-1236 12.5 15 8 18 54.77 -29 44 05.8 U 6568-2364 11.9 NSV 17839 16 8 18 55.21 -29 44 42.0 U 6568-2262 6568-2262-1 8.7 HD 70058 17 8 18 53.23 -29 44 59.4 M 6568-2704 12.7 NSV 17838 18 8 18 51.19 -29 45 37.3 U 6568-1494 6568-1494-1 11.8 A0 NSV 17836 19 8 18 49.68 -29 46 13.4 U 6568-2644 6568-2644-1 12.2 20 8 18 48.14 -29 46 14.4 U 6568-1719 12.4 A1 21 8 18 45.41 -29 46 07.7 U 14.4 22 8 18 44.71 -29 45 44.7 U 6568-2222 12.5 NSV 17829 23 8 18 43.52 -29 45 38.4 U 13.9 24 8 18 46.62 -29 45 01.1 U 6568-2698 6568-2698-1 11.1 B5 CD-29 5924 25 8 18 49.32 -29 45 12.1 U 6568-2606 6568-2606-1 11.4 B5 CPD-29 2482 26 8 18 48.12 -29 43 27.8 U 6568-2829 13.7 NSV 17832 27 8 18 53.76 -29 43 54.0 U 14.4 28* 8 18 57.28 -29 43 19.2 U 6568-1901 12.9 NSV 17842 29 8 18 58.29 -29 42 46.2 U 6568-2662 13.8 30 8 18 58.83 -29 42 33.3 U 14.3 31 8 18 58.86 -29 42 08.0 U 14.4 32 8 19 02.76 -29 42 10.8 U 13.8 33 8 19 02.82 -29 41 57.1 U 14.6 34 8 19 05.98 -29 42 59.9 U 14.1 35 8 19 07.96 -29 43 01.9 U 13.8 36 8 19 10.50 -29 43 46.4 U 14.1 37 8 19 12.52 -29 45 48.4 U 14.0 38 8 19 12.55 -29 46 10.4 U 6568-2770 13.1 39* 8 19 14.38 -29 46 10.5 U 6568-0627 6568- 627-1 9.4 K0 CD-29 5941 40 8 19 10.90 -29 46 59.7 U 6568-2108 6568-2108-1 11.5 K0: NSV 17853 41 8 19 14.60 -29 48 03.8 U 6568-2357 6568-2357-1 11.5 CD-29 5943 42 8 19 11.54 -29 48 34.5 U 14.1 43 8 19 07.46 -29 49 15.4 U 14.2 44 8 19 04.37 -29 49 21.8 U 6568-2335 12.8 NSV 17850 45 8 19 05.43 -29 48 54.2 M 6568-2418 13.0 NSV 17851 46 8 19 05.06 -29 48 50.7 M 14.2 47 8 18 59.98 -29 48 15.0 U 6568-2343 6568-2343-1 12.5 48 8 18 58.61 -29 49 01.2 U 6568-1855 6568-1855-1 10.2 B4: CD-29 5934 49 8 19 01.11 -29 48 02.0 U 14.6 50* 8 18 56.18 -29 48 28.8 U 6568-2356 6568-2356-1 11.4 B6 CD-20 5929 51 8 18 56.26 -29 48 44.2 M 6568-2249 13.8 52 8 18 48.66 -29 48 44.1 U 13.2 NSV 17833 53 8 18 52.36 -29 47 27.6 U 14.0 54 8 18 46.21 -29 48 55.0 U 6568-1226 13.0 55 8 18 46.28 -29 49 13.3 U 6568-2837 13.8 56 8 18 39.12 -29 49 12.9 U 14.1 57 8 18 39.46 -29 49 22.6 U 14.3 58 8 18 40.58 -29 47 50.8 U 6568-1759 12.9 B9 NSV 17827 59 8 18 36.31 -29 47 54.7 U 6568-1300 6568-1300-1 12.4 60 8 18 33.44 -29 47 13.5 U 14.5 61 8 18 36.69 -29 46 40.4 U 14.1 62 8 18 39.64 -29 46 10.0 U 14.1 63 8 18 39.22 -29 45 54.4 U 6568-1308 14.0 64 8 18 39.00 -29 45 35.7 U 14.6 65 8 18 31.73 -29 45 32.6 U 6568-2445 13.1 66 8 18 34.45 -29 44 49.1 U 6568-1895 6568-1895-1 12.5 B9 67 8 18 37.69 -29 43 58.5 U 6568-0663 6568- 663-1 11.9 G: NSV 17826 68 8 18 40.69 -29 43 30.8 U 6568-2280 6568-2280-1 11.4 B5 CD-29 5919 69 8 18 41.93 -29 43 23.7 M 6568-1797 12.6 A0 70 8 18 42.37 -29 42 10.2 U 13.8 NSV 17828 71 8 18 43.15 -29 42 04.1 U 14.1 72 8 18 44.85 -29 41 44.8 U 6568-1149 6568-1149-1 11.7 B6 NSV 17830 73 8 18 44.65 -29 41 35.1 M 6568-2467 13.8 74 8 18 46.01 -29 42 13.3 U 6568-1145 12.6 75* 8 18 47.19 -29 42 19.7 U 6568-1209 6568-1209-1 10.8 K0: CD-29 5925 76 8 18 52.44 -29 41 17.0 M 6568-3107 12.5 F5: 77 8 18 53.02 -29 41 14.8 M 6568-2777 6568-2777-1 12.8 A/F NSV 17837 78 8 18 54.34 -29 40 09.3 U 13.5 79 8 18 56.50 -29 40 16.7 U 13.8 80 8 19 05.36 -29 41 09.1 M 13.3 81 8 19 10.16 -29 41 38.8 U 14.2 82 8 19 12.48 -29 41 48.2 U 14.5 83 8 19 19.37 -29 42 54.3 U 6568-2782 12.6 84 8 19 20.92 -29 43 21.6 U 14.4 85 8 19 21.41 -29 44 03.5 U 14.2 86 8 19 19.02 -29 44 24.2 U 6568-2809 12.9 87 8 19 25.12 -29 45 07.5 U 6568-1612 12.9 88 8 19 23.02 -29 46 34.2 U 6568-1635 13.4 89 8 19 18.06 -29 46 50.3 U 13.8 90 8 19 19.42 -29 47 33.1 U 13.8 91 8 19 19.82 -29 48 15.6 U 6568-2040 6568-2040-1 11.9 B6 92 8 19 17.73 -29 48 28.4 U 6568-1557 14.1 93 8 19 23.01 -29 48 31.2 U 14.3 94 8 19 16.71 -29 49 34.9 U 6568-2849 13.7 95 8 19 16.96 -29 49 53.9 U 6568-2462 13.0 NSV 17855 96 8 19 17.71 -29 50 01.9 U 6568-1328 12.8 97 8 19 14.81 -29 50 30.8 U 6568-2116 12.9 98 8 19 10.56 -29 49 32.3 U 6568-1775 13.8 99 8 19 03.93 -29 50 45.4 U 6568-2302 6568-2302-1 12.0 100 8 19 01.24 -29 51 30.1 U 6568-2595 12.5 101 8 19 04.81 -29 51 00.7 M 6568-2493 14.0 102 8 19 04.61 -29 51 10.7 U 6568-2663 12.9 103 8 18 52.62 -29 51 25.0 U 6568-1944 12.1 G0 104 8 18 53.59 -29 50 52.1 U 14.5 105 8 18 51.88 -29 50 53.1 M 14.3 106 8 18 48.45 -29 50 59.2 U 6568-1573 12.1 G: 107 8 18 48.69 -29 50 43.4 U 6568-1656 13.4 108 8 18 52.27 -29 50 22.4 U 6568-3097 13.5 109 8 18 50.13 -29 50 15.6 M 6568-2224 13.2 110 8 18 50.45 -29 49 37.5 U 6568-2789 6568-2789-1 12.0 B9 111* 8 18 44.34 -29 50 32.7 U 6568-2404 6568-2404-1 11.6 B5 CD-29 5920 112 8 18 41.84 -29 50 24.7 U 6568-2414 13.5 Notes 8 eastern star of 5" pair, V mag. is for combined light. 39 NSV 17854. 50 NSV 17841. 75 NSV 17831. 111 CPD-29 2480.