Lacaille's Original Object Positions (original) (raw)

Below we give a list of Nicholas Louis de Lacaille's original position measurements for the objects in his catalog, compared with modern positions. We give Lacaille's catalog number, identification of the object (Messier, NGC or IC number, together with proper name, or other catalog entry), as well as Right Ascension (RA in h:m:s), Declination (Dec in deg:m:s) as measured by Lacaille for approximate epoch 1752.0 and precessed to epoch J2000.0, and for comparison, the modern position of the object.

Lacaille Ident RA (1752.0) Dec RA (2000.0) Dec RA (2000.0) Dec Lacaille Lacaille modern

Lac I.1 N 104, 47 Tuc 00:22:54 -73:26:50 00:33:25 -72:04:35 00:24.1 -72:05

Lac I.2 N2070, 30 Dor 05:40:01 -69:17:20 05:38:13 -69:09:47 05:38.7 -69:06

Lac I.3 N2477 07:42:08 -38:00:00 07:50:56 -38:37:09 07:52.3 -38:33

Lac I.4 N4833 12:43:36 -69:28:00 12:59:43 -70:48:46 12:59.6 -70:53

Lac I.5 N5139, Omega Cen 13:12:09 -46:10:45 13:26:51 -47:28:41 13:26.8 -47:29

Lac I.6 M83 13:23:16 -28:35:30 13:37:09 -29:52:02 13:37.0 -29:52

Lac I.7 N5281 13:29:34 -61:40:10 13:46:38 -62:55:34 13:46.6 -62:54

Lac I.8 N6124 16:08:30 -40:03:10 16:25:26 -40:39:11 16:25.6 -40:40

Lac I.9 M4 16:08:33 -25:54:55 16:23:42 -26:31:12 16:23.6 -26:32

Lac I.10 N6242 16:38:36 -39:02:00 16:55:35 -39:27:55 16:55.6 -39:30

Lac I.11 NGC 6634 18:13:41 -33:37:05 18:30:02 -33:29:12 M69 18:31.4 -32:21

Lac I.12 M22 18:21:19 -24:05:00 18:36:27 -23:54:35 18:36.4 -23:54

Lac I.13 N6777, GC 4484 18:58:10 -71:55:45 19:26:46 -71:29:58 19:26.8 -71:30

Lac I.14 M55 19:24:20 -31:29:00 19:40:07 -30:56:33 19:40.0 -30:58

Lac II.1 - 03:54:57 -45:09:40 04:02:54 -44:27:54

Lac II.2 - 07:17:00 -33:40:00 07:26:13 -34:08:53 Collinder 140 07:24.1 -31:54

Lac II.3 N2516 07:54:45 -60:09:40 07:58:55 -60:50:07 07:58.3 -60:52

Lac II.4 N2546 08:02:00 -36:30:00 08:11:10 -37:13:29 08:12.4 -37:38

Lac II.5 I2391, o Vel 08:31:46 -52:14:05 08:38:49 -53:06:02 08:40.2 -53:04

Lac II.6 ? 08:37:46 -41:22:25 08:46:43 -42:16:18 Tr 10 08:47.8 -42:29

Lac II.7 N3228 10:11:45 -50:29:00 10:21:28 -51:43:35 10:21.8 -51:43

Lac II.8 N3293 10:26:32 -56:56:05 10:35:57 -58:12:49 10:35.8 -58:14

Lac II.9 I2602, Theta Cru 10:34:15 -63:06:16 10:43:03 -64:23:58 10:43.2 -64:24

Lac II.10 N3532 10:56:08 -57:19:30 11:06:36 -58:39:40 11:06.4 -58:40

Lac II.11 - 11:12:00 -56:58:30 11:23:06 -58:19:57

Lac II.12 N4755, Kappa Cru 12:39:13 -59:00:30 12:53:49 -60:21:40 12:53.6 -60:20

Lac II.13 N6231 16:36:55 -41:23:10 16:54:16 -41:49:36 16:54.0 -41:48

Lac II.14 M7 17:37:12 -34:39:55 17:53:43 -34:45:10 17:53.9 -34:49

Lac III.1 - 04:56:56 -49:51:30 05:03:21 -49:30:06

Lac III.2 N2547 08:03:30 -48:31:00 08:10:49 -49:14:39 08:10.7 -49:16

Lac III.3 ? 08:34:20 -47:13:10 08:42:22 -48:05:58 vdB-Ha 47; I2395? 08:42.6 -48:07

Lac III.4 I2488 09:20:22 -55:55:30 09:27:49 -56:59:56 09:27.6 -56:59

Lac III.5 N3372, Eta Car 10:34:30 -58:49:10 10:43:58 -60:06:57 10:43.8 -59:52 Collinder 228 10.43.0 -60:01

Lac III.6 N3372, Eta Car 10:34:45 -58:12:25 10:44:18 -59:30:14 10:43.8 -59:52

Lac III.7 N3766 11:24:49 -60:15:00 11:36:14 -61:37:11 11:36.1 -61:37

Lac III.8 N5662 14:17:43 -55:27:50 14:35:18 -56:34:21 14:35.2 -56:33

Lac III.9 - 15:03:16 -58:14:30 15:22:45 -59:09:41

Lac III.10 N6025 15:42:56 -59:46:50 16:03:50 -60:30:20 16:03.7 -60:30

Lac III.11 N6397 17:20:38 -53:31:30 17:40:46 -53:42:04 17:40.7 -53:40

Lac III.12 M6 17:24:00 -32:02:45 17:40:09 -32:12:49 17:40.1 -32:13

Lac III.13 M8 17:48:41 -24:20:15 18:03:53 -24:21:36 18:03.8 -24:23

Lac III.14 - 21:12:53 -57:57:15 21:31:05 -56:53:18

Hartmut Frommert
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Last Modification: December 26, 1998