Active supernovae

The below table lists all currently active (candidate) supernovae brighter than magnitude 18.
For more information about a certain supernova, click on its designation.

Supernova Discovery Maximum Last observed
designation host type ra dec date discoverer(s) date magn date magn
AT2018hnaUGC 7534?12:26:12.05+58:18:51.122 Oct 2018Koichi Itagaki22 Oct 201816.322 Oct 201816.3
AT2018hmt?20:48:45.87+24:11:40.621 Oct 2018Gaia21 Oct 201817.421 Oct 201817.4
AT2018hmyESO 124-G18?08:31:36.39-59:47:08.821 Oct 2018Stu Parker21 Oct 201816.821 Oct 201816.8
AT2018hms?20:35:59.69+22:19:28.120 Oct 2018Gaia20 Oct 201816.920 Oct 201816.9
AT2018hmuQSO10:52:45.11+13:27:46.920 Oct 2018Gaia20 Oct 201817.920 Oct 201817.9
2018hmeMCG -3-25-10Ia09:35:39.43-17:23:10.920 Oct 2018ASAS-SN22 Oct 201815.722 Oct 201815.7
AT2018hmn?11:26:40.21+22:17:03.319 Oct 2018Gaia19 Oct 201817.219 Oct 201817.2
AT2018hlw?17:50:45.98-31:16:34.518 Oct 2018ATLAS18 Oct 201816.518 Oct 201816.5
2018hlrIa-91T18:20:33.17+41:58:04.418 Oct 2018PMO-Tsinghua Supernova Survey (PTSS)22 Oct 201817.522 Oct 201817.5
AT2018hmh?09:29:03.40-01:11:55.018 Oct 2018Gaia18 Oct 201817.918 Oct 201817.9
AT2018hmxCGCG 263-047?08:33:39.34+55:35:53.117 Oct 2018ATLAS17 Oct 201817.717 Oct 201817.7
AT2018hleIC 340II03:39:28.10-13:07:01.917 Oct 2018LOSS20 Oct 201817.520 Oct 201817.5
AT2018hlsUGC 4289?08:15:43.61+58:18:53.417 Oct 2018ATLAS17 Oct 201817.717 Oct 201817.7
AT2018hlt?07:51:07.16+52:45:22.117 Oct 2018ATLAS17 Oct 201817.817 Oct 201817.8
2018hkxIa04:00:53.81-66:40:30.616 Oct 2018ASAS-SN16 Oct 201817.416 Oct 201817.4
2018hkwIa-91bg02:38:22.78-11:44:21.016 Oct 2018ASAS-SN16 Oct 201817.516 Oct 201817.5
AT2018hkqIC 2541?10:05:47.84-17:26:03.115 Oct 2018ASAS-SN19 Oct 201814.719 Oct 201814.7
AT2018hldM31FeII00:42:03.10+41:02:33.115 Oct 2018Koichi Nishiyama and Fujio Kabashima17 Oct 201816.321 Oct 201816.9
AT2018hhpMCG -2-7-72?02:42:33.56-09:28:04.214 Oct 2018ASAS-SN14 Oct 201817.214 Oct 201817.2
2018hhnUGC 12222Ia22:52:32.06+11:40:26.713 Oct 2018Jaroslaw Grzegorzek21 Oct 201816.121 Oct 201816.1
AT2018hhoM31?00:42:40.13+41:17:26.913 Oct 2018Italian Supernovae Search Project13 Oct 201817.513 Oct 201817.5
AT2018his?17:49:31.58+17:15:37.313 Oct 2018Gaia13 Oct 201816.613 Oct 201816.6
AT2018hgp?22:14:03.76+37:34:52.811 Oct 2018ASAS-SN11 Oct 201817.811 Oct 201817.8
2018hjwCGCG 030-025Ia-91T07:53:02.17+07:16:31.511 Oct 2018ASAS-SN11 Oct 201817.011 Oct 201817.0
2018hjuIa23:55:25.88+47:11:32.611 Oct 2018ATLAS20 Oct 201817.520 Oct 201817.5
AT2018hji?05:01:51.68+13:31:21.810 Oct 2018ATLAS10 Oct 201817.310 Oct 201817.3
AT2018hie?17:55:06.59+00:04:00.710 Oct 2018Gaia10 Oct 201817.410 Oct 201817.4
2018hibESO 417-G6Ia02:56:21.27-32:11:08.810 Oct 2018Gaia10 Oct 201817.210 Oct 201817.2
AT2018hgdSN00:22:05.32+07:03:50.710 Oct 2018ASAS-SN20 Oct 201815.920 Oct 201815.9
AT2018hgk?19:33:09.87-29:53:53.510 Oct 2018ATLAS10 Oct 201817.610 Oct 201817.6
AT2018hfsM31?00:42:49.84+41:23:35.010 Oct 2018XOSS11 Oct 201817.911 Oct 201817.9
AT2018hjl?06:57:44.28-32:26:44.110 Oct 2018ATLAS10 Oct 201814.510 Oct 201814.5
AT2018hhq?05:55:48.91-30:30:53.110 Oct 2018ATLAS10 Oct 201815.710 Oct 201815.7
AT2018hgu?17:41:03.59-19:24:21.710 Oct 2018ATLAS10 Oct 201817.510 Oct 201817.5
2018hfrIa-91T09:30:55.05-04:34:16.710 Oct 2018ASAS-SN19 Oct 201815.819 Oct 201815.8
2018hfgUGC 4642IIn08:52:56.19+42:24:46.79 Oct 2018ASAS-SN9 Oct 201816.99 Oct 201816.9
2018hfmII09:36:08.70+06:15:27.79 Oct 2018ASAS-SN9 Oct 201815.017 Oct 201815.2
2018hfuIa-pec23:54:50.92+05:42:58.29 Oct 2018ASAS-SN18 Oct 201817.418 Oct 201817.4
AT2018hlu?07:25:45.04+54:31:55.19 Oct 2018ATLAS21 Oct 201817.921 Oct 201817.9
AT2018hff?18:39:39.49-20:06:01.68 Oct 2018Gaia8 Oct 201817.28 Oct 201817.2
2018hdpUGC 1716Ic02:13:45.05+04:06:08.28 Oct 2018ASAS-SN8 Oct 201816.88 Oct 201816.8
2018hfpMCG -3-53-15Ia20:59:47.87-16:38:11.97 Oct 2018ASAS-SN13 Oct 201816.513 Oct 201816.5
AT2018hfcUGC 6103?11:01:58.58+45:13:39.17 Oct 2018Gaia7 Oct 201817.87 Oct 201817.8
AT2018hdn?21:01:34.25-09:26:09.97 Oct 2018ASAS-SN7 Oct 201817.515 Oct 201817.6
2018hgcIa00:42:04.56-02:37:44.56 Oct 2018CRTS20 Oct 201817.020 Oct 201817.0
AT2018het?18:42:42.86-32:03:32.66 Oct 2018Gaia6 Oct 201817.66 Oct 201817.6
2018hcqESO 89-G19Ia-91T08:20:25.87-65:20:30.56 Oct 2018ASAS-SN6 Oct 201817.06 Oct 201817.0
AT2018hdx?04:51:05.47+05:15:01.85 Oct 2018Gaia5 Oct 201817.75 Oct 201817.7
2018hckIa04:34:46.27-13:29:02.25 Oct 2018ASAS-SN5 Oct 201817.69 Oct 201817.7
AT2018hcc?18:31:47.25-11:54:17.14 Oct 2018ASAS-SN4 Oct 201816.49 Oct 201816.8
AT2018hch?20:29:35.59-54:28:44.44 Oct 2018ASAS-SN4 Oct 201817.04 Oct 201817.0
AT2018hbz?11:23:53.51+58:08:34.33 Oct 2018Gaia3 Oct 201817.43 Oct 201817.4
2018hcrIa22:25:59.41+03:27:29.83 Oct 2018ATLAS22 Oct 201817.122 Oct 201817.1
2018hayII09:23:17.66+42:22:48.62 Oct 2018ASAS-SN2 Oct 201816.42 Oct 201816.4
AT2018hbj?21:30:56.68-61:34:40.32 Oct 2018Gaia2 Oct 201817.82 Oct 201817.8
AT2018hba?17:13:55.74-43:22:53.62 Oct 2018ATLAS2 Oct 201817.82 Oct 201817.8
AT2018haz?18:37:05.92+37:17:59.02 Oct 2018ATLAS3 Oct 201817.93 Oct 201817.9
AT2018hbk?18:56:20.21-57:08:41.11 Oct 2018Gaia1 Oct 201817.51 Oct 201817.5
AT2018hax?17:01:58.83-39:31:43.31 Oct 2018Gaia1 Oct 201815.81 Oct 201815.8
AT2018hav?17:35:43.91-45:12:36.91 Oct 2018Gaia1 Oct 201816.31 Oct 201816.3
MASTER OT J193047.39-795628.3ESO 25-G8?19:30:47.39-79:56:28.31 Oct 2018MASTER1 Oct 201817.21 Oct 201817.2
2018gyrIa00:49:47.22-61:39:13.030 Sep 2018ASAS-SN30 Sep 201817.130 Sep 201817.1
2018gwoNGC 4128I12:08:38.91+68:46:45.028 Sep 2018Patrick Wiggins28 Sep 201816.43 Oct 201816.8
AT2018gyfLEDA 2091955?14:47:49.06+37:02:46.727 Sep 2018Gaia27 Sep 201816.227 Sep 201816.2
AT2018gwp?18:01:48.75+07:00:49.627 Sep 2018LOSS27 Sep 201816.927 Sep 201816.9
2018gvtNGC 7489II23:07:32.54+23:00:20.927 Sep 2018ZTF8 Oct 201817.78 Oct 201817.7
AT2018gxr?19:46:33.03+06:37:55.826 Sep 2018ZTF26 Sep 201816.926 Sep 201816.9
AT2018hhm?20:54:18.43+19:34:44.026 Sep 2018Blaz Mikuz26 Sep 201816.113 Oct 201817.3
AT2018gxf?07:25:08.32+11:55:21.725 Sep 2018ZTF25 Sep 201817.425 Sep 201817.4
2018gvaCGCG 286-070Ia07:51:09.58+62:05:12.225 Sep 2018ASAS-SN25 Sep 201816.029 Sep 201816.4
AT2018gur?17:07:51.25-00:22:26.024 Sep 2018ASAS-SN24 Sep 201816.024 Sep 201816.0
AT2018gwl?03:12:25.46+20:18:32.424 Sep 2018ZTF24 Sep 201817.924 Sep 201817.9
2018gvlUGC 3488Ia06:34:10.85+52:07:47.322 Sep 2018ZTF2 Oct 201817.72 Oct 201817.7
AT2018gtb?23:09:38.03+37:07:14.921 Sep 2018ZTF21 Sep 201817.025 Sep 201817.0
AT2018gtv?13:31:03.02-55:26:23.121 Sep 2018Gaia21 Sep 201815.821 Sep 201815.8
AT2018gud?20:37:45.06+19:34:00.721 Sep 2018ZTF21 Sep 201817.221 Sep 201817.2
AT2018guf?20:49:11.74+29:34:42.321 Sep 2018ZTF21 Sep 201817.821 Sep 201817.8
AT2018gsd?15:12:01.81+06:13:12.919 Sep 2018Gaia19 Sep 201817.919 Sep 201817.9
AT2018gqvESO 171-G4?11:59:08.78-53:24:20.118 Sep 2018Gaia18 Sep 201817.018 Sep 201817.0
AT2018gwf?20:41:34.51+22:31:35.418 Sep 2018ZTF18 Sep 201817.518 Sep 201817.5
AT2018gpz?12:07:10.41-49:51:08.817 Sep 2018Gaia17 Sep 201817.817 Sep 201817.8
AT2018gql?01:53:48.92+52:52:03.316 Sep 2018ZTF16 Sep 201816.516 Sep 201816.5
AT2018glk?11:12:40.10-50:48:46.616 Sep 2018Gaia16 Sep 201816.916 Sep 201816.9
AT2018glt?22:32:15.34-23:47:13.716 Sep 2018ATLAS16 Sep 201817.816 Sep 201817.8
AT2018gli?07:22:16.89-49:00:04.516 Sep 2018Gaia16 Sep 201817.916 Sep 201817.9
AT2018glf?22:24:43.47+50:31:39.115 Sep 2018Gaia15 Sep 201817.115 Sep 201817.1
AT2018glh?11:31:43.52-48:12:19.015 Sep 2018Gaia15 Sep 201815.815 Sep 201815.8
AT2018gjxNGC 865II02:16:15.55+28:35:28.715 Sep 2018XOSS17 Sep 201815.88 Oct 201817.6
2018gioIC 367Ia04:20:41.24-14:46:52.715 Sep 2018ASAS-SN15 Sep 201817.315 Sep 201817.3
2018gskNGC 1517Ic04:09:11.62+08:38:51.815 Sep 2018ATLAS6 Oct 201816.26 Oct 201816.2
AT2018grw?02:24:36.44+37:20:21.415 Sep 2018ZTF15 Sep 201817.115 Sep 201817.1
AT2018glg?21:52:32.31+49:04:19.514 Sep 2018Gaia14 Sep 201816.919 Sep 201817.2
2018ghbESO 427-G22Ia06:58:27.52-28:45:48.814 Sep 2018ASAS-SN14 Sep 201815.214 Sep 201815.2
MASTER OT J082017.38+205232.2UGC 4344IIb08:20:17.38+20:52:32.214 Sep 2018MASTER14 Sep 201815.319 Sep 201816.2
2018gkjIa22:02:26.96-64:21:04.614 Sep 2018ASAS-SN17 Sep 201816.91 Oct 201817.6
AT2018gkc?19:57:24.64-20:43:07.913 Sep 2018ZTF13 Sep 201817.713 Sep 201817.7
2018gluMCG -2-39-9Ia15:14:11.16-14:20:58.912 Sep 2018ATLAS16 Sep 201817.016 Sep 201817.0
2018gfiIa00:58:53.92-24:11:46.812 Sep 2018ASAS-SN17 Sep 201816.817 Sep 201816.8
AT2018gqk?18:06:08.16+06:56:04.911 Sep 2018ZTF11 Sep 201817.111 Sep 201817.1
2018geoIa16:18:13.84+39:07:25.711 Sep 2018ATLAS19 Sep 201816.619 Sep 201816.6
2018getUGC 3912II07:34:09.07+04:32:57.910 Sep 2018ASAS-SN10 Sep 201816.510 Sep 201816.5
AT2018ght?14:13:52.33-28:52:57.610 Sep 2018Gaia10 Sep 201817.710 Sep 201817.7
AT2018gqj?06:46:43.02+41:20:59.310 Sep 2018ZTF10 Sep 201816.410 Sep 201816.4
2018gexII21:31:28.58-50:44:59.310 Sep 2018ASAS-SN5 Oct 201817.65 Oct 201817.6
2018gepIc-BL16:43:48.22+41:02:43.49 Sep 2018ZTF14 Sep 201815.618 Sep 201816.2
AT2018grj?18:22:49.19+71:36:59.39 Sep 2018ZTF9 Sep 201817.99 Sep 201817.9
AT2018geb?02:34:22.69+11:32:14.69 Sep 2018ATLAS9 Sep 201817.99 Sep 201817.9
AT2018fzxIC 1105?15:13:11.51+04:17:01.59 Sep 2018ATLAS21 Sep 201816.221 Sep 201816.2
2018ggcNGC 2622Ia-pec08:38:10.69+24:53:26.78 Sep 2018ZTF8 Sep 201817.68 Sep 201817.6
AT2018gfb?20:52:38.00+30:33:10.88 Sep 2018Gaia8 Sep 201817.414 Sep 201817.5
AT2018gfy?19:50:38.46+04:43:37.08 Sep 2018ZTF8 Sep 201816.88 Sep 201816.8
AT2018gga?19:36:59.70+00:17:41.78 Sep 2018ZTF8 Sep 201817.08 Sep 201817.0
2018fzwIa05:42:48.04-24:29:34.48 Sep 2018ATLAS13 Sep 201817.413 Sep 201817.4
AT2018hap?00:55:22.83+30:29:14.98 Sep 2018ATLAS8 Sep 201817.68 Sep 201817.6
2018grtIa00:04:36.31+51:59:37.76 Sep 2018ZTF19 Oct 201817.219 Oct 201817.2
2018fvxESO 555-G1II05:49:29.40-19:33:20.96 Sep 2018ATLAS6 Sep 201817.812 Sep 201817.6
2018fvjIa04:29:31.22-11:01:51.46 Sep 2018ASAS-SN14 Sep 201817.614 Sep 201817.6
2018fvmIa20:37:27.79-37:43:16.96 Sep 2018ATLAS6 Sep 201817.88 Oct 201817.8
2018fvyIa01:32:16.23-33:06:05.66 Sep 2018ATLAS6 Sep 201817.96 Sep 201817.9
AT2018gcm?18:58:03.23+25:08:28.56 Sep 2018ZTF6 Sep 201816.614 Sep 201817.7
2018fvhIa01:15:10.23-18:10:59.26 Sep 2018ASAS-SN6 Sep 201817.76 Sep 201817.7
2018fubIa00:40:30.67-50:41:15.15 Sep 2018ASAS-SN4 Oct 201817.04 Oct 201817.0
2018fukESO 16-G11Ia05:45:07.13-79:23:47.95 Sep 2018ASAS-SN5 Sep 201817.05 Sep 201817.0
AT2018fucESO 304-G24?04:49:54.51-41:56:16.95 Sep 2018ASAS-SN18 Sep 201817.018 Sep 201817.0
2018fygIa02:45:59.36+42:32:29.75 Sep 2018ATLAS7 Sep 201817.417 Sep 201817.6
AT2018gqwESO 269-G14?12:57:06.42-46:52:05.65 Sep 2018Gaia18 Sep 201815.618 Sep 201815.6
AT2018fvg?12:26:24.67-51:01:59.24 Sep 2018Gaia4 Sep 201815.818 Sep 201817.0
2018ftcIa23:28:03.96+09:46:14.94 Sep 2018ASAS-SN4 Sep 201817.44 Sep 201817.4
AT2018ftn?01:25:17.87+09:39:00.14 Sep 2018Malhar R. Kendurkar4 Sep 201817.34 Sep 201817.3
2018gdlIa00:41:44.60+51:37:51.53 Sep 2018ZTF19 Sep 201816.719 Sep 201816.7
AT2018gfz?18:29:29.94+06:43:47.82 Sep 2018ZTF2 Sep 201817.92 Sep 201817.9
2018fqnIa22:39:38.14-15:05:09.92 Sep 2018ASAS-SN2 Sep 201817.82 Sep 201817.8
AT2018fuy?18:18:00.71-26:48:34.92 Sep 2018Gaia2 Sep 201817.62 Sep 201817.6
AT2018fsyM31FeII00:44:19.85+41:29:26.52 Sep 2018Emmanuel Conseil4 Sep 201817.57 Sep 201817.7
2018fruUGC 8604II13:36:03.75+66:18:04.31 Sep 2018ATLAS27 Sep 201817.027 Sep 201817.0
2018fuuIa23:24:56.60+09:25:52.71 Sep 2018ZTF1 Sep 201817.81 Sep 201817.8
2018fqdIa20:51:51.38-36:50:12.11 Sep 2018ASAS-SN1 Sep 201817.21 Sep 201817.2
AT2018gciUGC 1032?01:27:32.53+19:10:43.91 Sep 2018ZTF17 Sep 201814.717 Sep 201814.7
2018fpbKUG 2357+340IIb23:59:42.80+34:20:39.931 Aug 2018ASAS-SN15 Sep 201815.65 Oct 201815.9
2018fqlIa23:41:16.08-28:57:44.731 Aug 2018ATLAS31 Aug 201817.731 Aug 201817.7
2018fnqIa20:12:29.91-44:06:36.131 Aug 2018ASAS-SN6 Oct 201816.86 Oct 201816.8
AT2018fpmNGC 7267?22:24:21.64-33:41:33.331 Aug 2018ASAS-SN31 Aug 201817.011 Oct 201817.9
AT2018fuo?21:58:08.24-31:23:47.831 Aug 2018ATLAS31 Aug 201817.831 Aug 201817.8
AT2018fqa?00:54:23.19-23:48:31.031 Aug 2018ATLAS31 Aug 201817.631 Aug 201817.6
AT2018fth?05:50:02.14-28:13:12.231 Aug 2018ATLAS31 Aug 201817.731 Aug 201817.7
2018fpxII03:03:40.13+45:38:37.530 Aug 2018ATLAS30 Aug 201817.630 Aug 201817.6
2018fsqIa07:17:49.85+18:27:51.730 Aug 2018ZTF30 Aug 201817.530 Aug 201817.5
2018fssIa03:06:26.81+41:12:49.830 Aug 2018ZTF17 Sep 201816.417 Sep 201816.4
AT2018fpuUGC 8446?13:26:01.36+51:18:07.230 Aug 2018ATLAS30 Aug 201817.71 Oct 201817.8
AT2018frj?02:35:33.08-05:29:01.330 Aug 2018ATLAS30 Aug 201817.930 Aug 201817.9
AT2018fsu?19:45:05.81-13:29:31.330 Aug 2018ZTF30 Aug 201817.930 Aug 201817.9
AT2018fra?21:27:41.24+50:21:15.430 Aug 2018Gaia30 Aug 201817.530 Aug 201817.5
AT2018fqr?17:49:36.94-52:21:11.230 Aug 2018Gaia30 Aug 201817.030 Aug 201817.0
AT2018fut?19:57:41.37-08:24:55.430 Aug 2018ZTF30 Aug 201816.030 Aug 201816.0
2018fqkIa22:33:09.02+04:07:47.030 Aug 2018ATLAS9 Sep 201817.39 Sep 201817.3
MASTER OT J130056.06+280104.39NGC 4908?13:00:56.06+28:01:04.429 Aug 2018MASTER29 Aug 201817.329 Aug 201817.3
2018fndIa16:47:54.59+42:58:07.629 Aug 2018ZTF8 Sep 201817.08 Sep 201817.0
AT2018fqs?18:27:53.69-42:15:11.129 Aug 2018Gaia29 Aug 201817.529 Aug 201817.5
AT2018gwqUGC 3046?04:29:18.28+69:32:16.629 Aug 2018Gaia29 Aug 201817.529 Aug 201817.5
2018fngKUG 1604+157Ia16:07:03.01+15:35:44.727 Aug 2018ZTF16 Sep 201817.116 Sep 201817.1
2018gecUGC 3700Ia07:09:53.38+54:58:07.725 Aug 2018ASAS-SN10 Sep 201817.220 Oct 201817.7
AT2018fml?16:52:04.97+76:08:10.723 Aug 2018Gaia31 Aug 201817.031 Aug 201817.0
AT2018fmfNGC 2938IIP09:38:29.34+76:19:11.622 Aug 2018MASTER29 Aug 201815.59 Oct 201816.2
2018fiwMRK 0941Ia00:15:01.84+34:48:40.321 Aug 2018ATLAS14 Sep 201817.814 Sep 201817.8
2018fhwIa04:18:06.15-63:36:56.721 Aug 2018ASAS-SN21 Aug 201816.816 Sep 201817.3
2018ffzMCG +14-04-2Ic06:36:01.09+83:47:33.818 Aug 2018ASAS-SN18 Aug 201816.28 Sep 201817.8
AT2018fiz?15:21:43.50+33:01:24.717 Aug 2018ATLAS27 Aug 201817.727 Aug 201817.7
2018febCGCG 139-041Ia17:10:11.16+21:38:56.516 Aug 2018ATLAS28 Aug 201814.95 Sep 201815.0
2018evyNGC 6627II18:22:38.17+15:41:47.711 Aug 2018ATLAS16 Aug 201815.827 Sep 201817.1
2018fusII21:02:31.29-05:37:30.111 Aug 2018ZTF2 Sep 201817.42 Sep 201817.4
AT2018fce?16:52:51.43+17:26:51.06 Aug 2018ZTF14 Sep 201816.614 Sep 201816.6
2018eqqUGC 2536Ia03:06:55.16+41:30:32.93 Aug 2018Gaia6 Aug 201813.810 Sep 201814.9
2018ebtIc-BL20:41:54.99+64:12:52.720 Jul 2018ATLAS23 Jul 201815.08 Sep 201816.8
2018ebkMCG +4-48-2Ia20:28:35.54+25:44:08.316 Jul 2018ATLAS17 Aug 201817.531 Aug 201817.5
2018dfyUGC 11801IIn21:43:32.91+43:32:58.210 Jul 2018LOSS25 Jul 201817.18 Sep 201817.8



    Terminology:
            
    magn:       Magnitude (brightness) estimate    
    ra:         Right ascension
    dec:        Declination
    

Active supernova data as provided by ASRAS (Astronomy Section Rochester Academy of Science)
Calculations by a modified version of AAPlus, a C# implementation of the AA+ project by PJ Naughter from the algorithms presented in the book "Astronomical Algorithms" by Jean Meeus.
NGC2000 dso catalog and star labels from VizieR as provided by the Strasbourg astronomical Data Center.
Tycho2 catalog from the ESO archive.