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
AT2021aboxLEDA 277482?18:58:46.19-69:43:34.616 Oct 2021GSNST16 Oct 202116.316 Oct 202116.3
AT2021abow?16:33:03.75-59:23:57.016 Oct 2021MASTER16 Oct 202117.116 Oct 202117.1
2021abkoIC 190Ia02:02:07.19+23:33:01.714 Oct 2021ASAS-SN14 Oct 202116.914 Oct 202116.9
AT2021ablyUGC 5994?10:52:33.62+10:01:10.114 Oct 2021ATLAS14 Oct 202117.314 Oct 202117.3
AT2021abkq?19:04:32.57-31:59:11.414 Oct 2021ATLAS14 Oct 202117.314 Oct 202117.3
AT2021abnfNGC 3758E?11:36:29.40+21:35:45.914 Oct 2021ZTF14 Oct 202116.814 Oct 202116.8
AT2021ablf?01:11:22.52+57:51:42.813 Oct 2021MASTER13 Oct 202117.813 Oct 202117.8
AT2021abif?10:24:29.35-06:18:50.013 Oct 2021ZTF13 Oct 202117.313 Oct 202117.3
2021abjrIa10:21:39.20+06:24:09.913 Oct 2021ASAS-SN13 Oct 202116.813 Oct 202116.8
AT2021abbh?16:37:41.74+75:00:02.211 Oct 2021ATLAS11 Oct 202117.511 Oct 202117.5
AT2021abcwUGC 5751?10:35:45.46+21:03:18.911 Oct 2021ASAS-SN11 Oct 202117.211 Oct 202117.2
AT2021abht?07:43:00.71+31:23:11.111 Oct 2021ATLAS11 Oct 202117.511 Oct 202117.5
AT2021abav?10:05:19.32+77:39:14.410 Oct 2021ZTF10 Oct 202117.910 Oct 202117.9
AT2021aayaGalaxy04:09:57.08-22:26:36.79 Oct 2021ZTF9 Oct 202117.49 Oct 202117.4
AT2021aavt?01:53:58.30+59:37:54.59 Oct 2021Kumar9 Oct 202116.79 Oct 202116.7
AT2021aatz?05:02:09.75-15:48:02.18 Oct 2021ATLAS8 Oct 202116.78 Oct 202116.7
AT2021abguFlare15:42:14.20+54:58:29.48 Oct 2021Gaia8 Oct 202116.18 Oct 202116.1
AT2021aavs?19:37:10.92+18:00:09.88 Oct 2021MASTER8 Oct 202117.18 Oct 202117.1
AT2021aaqq?21:16:56.91-43:25:01.47 Oct 2021MASTER7 Oct 202116.57 Oct 202116.5
AT2021aaqo?09:20:01.02-11:03:02.77 Oct 2021MASTER7 Oct 202116.77 Oct 202116.7
AT2021abedulens?03:23:26.52+60:42:42.76 Oct 2021Gaia6 Oct 202114.26 Oct 202114.2
AT2021abea?15:55:35.28+11:23:00.66 Oct 2021Gaia6 Oct 202117.36 Oct 202117.3
2021aaslIa-91T09:16:21.47+17:43:40.26 Oct 2021ATLAS6 Oct 202117.96 Oct 202117.9
AT2021aano?09:57:16.16-19:08:01.94 Oct 2021ASAS-SN4 Oct 202116.04 Oct 202116.0
AT2021aazdFlare03:57:39.53-00:15:03.73 Oct 2021Gaia3 Oct 202116.23 Oct 202116.2
AT2021aayv?05:48:10.98-58:51:12.33 Oct 2021Gaia3 Oct 202117.33 Oct 202117.3
2021aalqII09:50:40.53+47:57:52.53 Oct 2021ASAS-SN3 Oct 202116.93 Oct 202116.9
AT2021aalrCGCG 276-025?16:33:01.96+53:11:58.73 Oct 2021ASAS-SN3 Oct 202117.03 Oct 202117.0
AT2021aagdESO 138-G27?17:26:42.48-59:56:01.92 Oct 2021ASAS-SN2 Oct 202116.92 Oct 202116.9
AT2021aagz?10:00:59.18+07:08:17.82 Oct 2021ZTF2 Oct 202117.72 Oct 202117.7
AT2021aatm?01:49:59.40+54:39:27.32 Oct 2021Gaia2 Oct 202116.22 Oct 202116.2
AT2021aadpESO 5-G1?05:54:07.82-83:42:01.11 Oct 2021ASAS-SN1 Oct 202117.21 Oct 202117.2
AT2021aayu?04:47:50.05-12:53:14.630 Sep 2021Gaia30 Sep 202117.330 Sep 202117.3
AT2021abmd?17:45:39.88+64:46:43.530 Sep 2021ZTF30 Sep 202117.430 Sep 202117.4
2021aagaIa05:39:48.89-40:58:38.030 Sep 2021ATLAS30 Sep 202117.430 Sep 202117.4
2021aaczESO 245-G12Ib02:02:37.98-42:47:45.430 Sep 2021ATLAS30 Sep 202117.430 Sep 202117.4
AT2021aalo?10:31:09.61+72:47:17.230 Sep 2021ZTF30 Sep 202116.69 Oct 202117.5
AT2021aafx?08:22:20.12-20:56:33.130 Sep 2021ATLAS30 Sep 202117.930 Sep 202117.9
AT2021aaqxBL02:02:43.66+42:05:16.329 Sep 2021Gaia29 Sep 202117.229 Sep 202117.2
AT2021aasz?10:45:11.42-55:18:36.028 Sep 2021Gaia28 Sep 202117.228 Sep 202117.2
AT2021aaqtBL15:17:41.82-24:22:19.528 Sep 2021Gaia28 Sep 202113.628 Sep 202113.6
AT2021aateFlare19:41:09.82+45:48:47.128 Sep 2021Gaia28 Sep 202117.628 Sep 202117.6
AT2021abgi?15:54:45.50-14:19:59.328 Sep 2021Gaia28 Sep 202117.228 Sep 202117.2
2021zysIa02:53:21.83-66:07:03.228 Sep 2021ASAS-SN28 Sep 202117.428 Sep 202117.4
AT2021aasn?20:13:00.97-00:07:20.027 Sep 2021ZTF27 Sep 202117.727 Sep 202117.7
AT2021aaqyYSO05:34:42.20-05:33:03.626 Sep 2021Gaia26 Sep 202116.426 Sep 202116.4
2021zswESO 77-IG4Ia23:09:44.19-72:00:01.526 Sep 2021ASAS-SN26 Sep 202116.526 Sep 202116.5
AT2021aagcHPM07:11:12.22+43:29:45.926 Sep 2021MASTER26 Sep 202113.726 Sep 202113.7
AT2021zjr?05:00:32.66+37:36:42.124 Sep 2021GEOTS24 Sep 202116.324 Sep 202116.3
AT2021zjq?04:38:06.46+46:28:40.324 Sep 2021GEOTS24 Sep 202116.424 Sep 202116.4
AT2021aanr?14:48:00.81-36:49:24.324 Sep 2021Gaia24 Sep 202117.724 Sep 202117.7
AT2021aapbFlare19:58:46.17+29:45:58.124 Sep 2021Gaia24 Sep 202117.824 Sep 202117.8
AT2021aamdYSO05:45:14.94+07:21:22.423 Sep 2021Gaia23 Sep 202112.823 Sep 202112.8
AT2021aaly?19:19:23.50+15:58:00.423 Sep 2021Gaia23 Sep 202117.123 Sep 202117.1
2021zgfIa01:45:23.25-42:42:01.022 Sep 2021ATLAS22 Sep 202117.522 Sep 202117.5
2021zfwIa21:31:37.68+11:49:58.622 Sep 2021PS122 Sep 202117.022 Sep 202117.0
AT2021zgg?06:51:45.91-42:13:24.822 Sep 2021ATLAS22 Sep 202116.322 Sep 202116.3
AT2021zgd?21:15:46.87-34:49:18.022 Sep 2021ATLAS22 Sep 202116.822 Sep 202116.8
AT2021zgc?20:03:30.39-38:19:26.822 Sep 2021ATLAS22 Sep 202117.422 Sep 202117.4
2021znyCGCG 438-018Ia-SC02:03:35.80+15:44:33.422 Sep 2021ZTF9 Oct 202115.89 Oct 202115.8
2021zhiII08:41:56.77-00:03:40.322 Sep 2021ZTF22 Sep 202117.022 Sep 202117.0
AT2021aakj?02:53:51.04+41:21:05.022 Sep 2021Gaia22 Sep 202117.822 Sep 202117.8
AT2021aajl?07:32:15.27-11:01:33.922 Sep 2021Gaia22 Sep 202117.822 Sep 202117.8
AT2021aajh?16:11:30.65-33:00:23.822 Sep 2021Gaia22 Sep 202117.822 Sep 202117.8
AT2021aajaulens?17:00:14.65-28:22:39.221 Sep 2021Gaia21 Sep 202117.021 Sep 202117.0
2021zfsIa21:32:29.83+05:20:46.721 Sep 2021ATLAS21 Sep 202116.221 Sep 202116.2
AT2021zfiAGN20:11:58.74-19:22:45.921 Sep 2021BraTS21 Sep 202114.921 Sep 202114.9
AT2021aaauBL12:07:01.71-47:46:32.620 Sep 2021Gaia20 Sep 202117.920 Sep 202117.9
AT2021aadjCV?16:56:43.26-33:26:06.720 Sep 2021Gaia20 Sep 202115.920 Sep 202115.9
AT2021aadh?07:51:06.35-07:56:47.320 Sep 2021Gaia20 Sep 202116.420 Sep 202116.4
2021zfrIa03:00:31.54-14:57:20.420 Sep 2021ZTF9 Oct 202116.49 Oct 202116.4
2021zehIa-91T22:56:09.43+13:05:52.819 Sep 2021ZTF4 Oct 202116.94 Oct 202116.9
AT2021zzc?17:50:07.62-31:12:05.919 Sep 2021Gaia19 Sep 202117.819 Sep 202117.8
2021zfqLEDA 3097207Ia19:52:46.62+50:32:47.919 Sep 2021ZTF4 Oct 202116.94 Oct 202116.9
AT2021zen?20:10:46.36+51:21:24.519 Sep 2021ZTF19 Sep 202117.619 Sep 202117.6
AT2021zyy?17:20:51.72-40:04:20.718 Sep 2021Gaia18 Sep 202117.718 Sep 202117.7
AT2021zxu?15:19:02.27-53:08:08.718 Sep 2021Gaia18 Sep 202117.518 Sep 202117.5
AT2021zyv?18:13:46.25-29:27:56.318 Sep 2021Gaia18 Sep 202117.818 Sep 202117.8
2021zbyNGC 1166II03:00:35.63+11:50:29.517 Sep 2021ATLAS19 Sep 202117.45 Oct 202117.6
AT2021zxxulens?18:05:33.70-35:12:02.917 Sep 2021Gaia17 Sep 202117.617 Sep 202117.6
AT2021ztwulens?18:14:25.84-36:17:21.817 Sep 2021Gaia17 Sep 202115.617 Sep 202115.6
AT2021zya?11:32:08.64-50:08:56.117 Sep 2021Gaia17 Sep 202116.617 Sep 202116.6
AT2021zxy?21:46:21.06+34:02:27.017 Sep 2021Gaia17 Sep 202116.717 Sep 202116.7
AT2021ztn?17:09:47.29-50:14:49.516 Sep 2021Gaia16 Sep 202117.916 Sep 202117.9
AT2021zqmulens?14:47:38.05-61:36:45.416 Sep 2021Gaia16 Sep 202117.216 Sep 202117.2
AT2021zbu?01:05:38.97+10:36:29.816 Sep 2021XOSS16 Sep 202117.116 Sep 202117.1
AT2021zbl?18:17:10.45+13:32:55.716 Sep 2021ZTF16 Sep 202117.616 Sep 202117.6
AT2021zfl?20:33:23.67+54:12:45.016 Sep 2021ZTF16 Sep 202117.616 Sep 202117.6
2021zauIa17:52:15.10+39:42:32.216 Sep 2021ZTF3 Oct 202116.93 Oct 202116.9
2021zacLEDA 2583597Ia08:20:57.10+58:51:25.016 Sep 2021ZTF30 Sep 202116.69 Oct 202116.9
AT2021zdj?19:36:44.52-05:23:57.716 Sep 2021ZTF18 Sep 202117.018 Sep 202117.0
AT2021yzf?18:55:52.43-69:49:10.715 Sep 2021GSNST15 Sep 202117.815 Sep 202117.8
AT2021zqi?12:16:18.24-60:55:42.115 Sep 2021Gaia15 Sep 202117.815 Sep 202117.8
2021yweIa07:27:35.97+57:10:14.614 Sep 2021ZTF14 Sep 202117.814 Sep 202117.8
AT2021zlh?14:57:53.39-68:21:38.414 Sep 2021Gaia14 Sep 202117.114 Sep 202117.1
2021yygMCG -2-14-10IIP05:16:21.03-13:28:40.014 Sep 2021ATLAS28 Sep 202117.528 Sep 202117.5
AT2021yzw?08:22:06.80+15:35:00.914 Sep 2021ZTF14 Sep 202117.914 Sep 202117.9
AT2021ywx?19:56:28.95+05:49:55.414 Sep 2021ZTF14 Sep 202117.414 Sep 202117.4
AT2021zkfYSO21:39:58.25+50:14:21.013 Sep 2021Gaia13 Sep 202111.213 Sep 202111.2
AT2021zkjYSO10:03:05.57-52:33:49.513 Sep 2021Gaia13 Sep 202112.913 Sep 202112.9
AT2021zkg?20:45:13.12+20:31:03.913 Sep 2021Gaia13 Sep 202116.913 Sep 202116.9
AT2021zkdYSO22:53:33.25+62:32:23.613 Sep 2021Gaia13 Sep 202117.413 Sep 202117.4
AT2021zki?09:02:27.80-30:14:11.013 Sep 2021Gaia13 Sep 202117.713 Sep 202117.7
AT2021yuk?02:52:14.64+00:20:10.813 Sep 2021ATLAS13 Sep 202116.913 Sep 202116.9
AT2021ypnM31FeII00:42:42.97+41:17:57.411 Sep 2021XOSS11 Sep 202117.011 Sep 202117.0
2021yrfCGCG 525-046Ia03:38:40.22+38:01:17.711 Sep 2021ATLAS21 Sep 202116.59 Oct 202117.1
AT2021zjm?21:01:48.70+48:08:59.411 Sep 2021Gaia11 Sep 202117.611 Sep 202117.6
AT2021ziy?21:01:52.71+68:09:51.910 Sep 2021Gaia10 Sep 202117.210 Sep 202117.2
AT2021zixYSO?08:39:41.66-41:04:52.310 Sep 2021Gaia10 Sep 202115.410 Sep 202115.4
AT2021ziwulens?20:29:41.89+31:17:42.910 Sep 2021Gaia10 Sep 202115.410 Sep 202115.4
AT2021ymlNova?20:07:56.96+20:41:58.110 Sep 2021MASTER10 Sep 202116.510 Sep 202116.5
AT2021yov?19:46:00.97+09:40:10.510 Sep 2021MASTER10 Sep 202117.410 Sep 202117.4
AT2021zieYSO20:59:14.16+78:23:04.39 Sep 2021Gaia9 Sep 202116.89 Sep 202116.8
2021yjaNGC 1325II03:24:21.17-21:33:56.28 Sep 2021ATLAS15 Sep 202114.29 Oct 202114.3
2021yhlIa09:03:30.38+23:01:57.88 Sep 2021ZTF8 Sep 202117.18 Sep 202117.1
AT2021zhlAGN07:59:41.82-38:43:56.18 Sep 2021Gaia8 Sep 202116.08 Sep 202116.0
AT2021zhd?19:57:44.46+28:52:35.58 Sep 2021Gaia8 Sep 202117.38 Sep 202117.3
AT2021zhf?08:01:00.89-18:06:07.48 Sep 2021Gaia8 Sep 202117.68 Sep 202117.6
AT2021ygv?05:41:15.35-69:36:47.56 Sep 2021Gaia6 Sep 202116.46 Sep 202116.4
AT2021ygo?09:05:13.36+61:01:57.96 Sep 2021Gaia6 Sep 202117.96 Sep 202117.9
AT2021aazqQSO07:01:34.54-46:34:36.76 Sep 2021Gaia6 Sep 202116.96 Sep 202116.9
AT2021aazb?06:21:57.30-52:49:09.05 Sep 2021Gaia5 Sep 202117.65 Sep 202117.6
AT2021ydqESO 221-G7?13:50:25.35-52:40:12.25 Sep 2021ASAS-SN5 Sep 202116.618 Sep 202116.8
2021yalIa-91T03:23:46.67+00:01:48.35 Sep 2021ATLAS5 Sep 202116.95 Sep 202116.9
2021yngIa03:14:31.18-74:50:13.15 Sep 2021ASAS-SN10 Sep 202117.010 Sep 202117.0
AT2021yemLMC?05:15:30.17-70:27:35.15 Sep 2021Gaia5 Sep 202115.65 Sep 202115.6
AT2021yen?19:17:04.45+26:53:21.75 Sep 2021Gaia5 Sep 202116.85 Sep 202116.8
AT2021yeo?19:29:13.95+06:40:19.85 Sep 2021Gaia5 Sep 202117.85 Sep 202117.8
AT2021xysESO 163-G14?07:43:45.77-56:45:58.64 Sep 2021MASTER4 Sep 202115.523 Sep 202117.5
AT2021aaub?06:25:18.36-37:47:41.54 Sep 2021Gaia4 Sep 202117.14 Sep 202117.1
AT2021xyxulens?19:13:42.48+04:54:55.73 Sep 2021Gaia3 Sep 202117.63 Sep 202117.6
AT2021xmr?19:54:49.64-76:37:12.02 Sep 2021MASTER2 Sep 202116.02 Sep 202116.0
2021yamIa04:18:38.76+35:39:38.12 Sep 2021XOSS21 Sep 202117.221 Sep 202117.2
AT2021xwc?06:47:57.03-02:23:53.61 Sep 2021Gaia1 Sep 202117.41 Sep 202117.4
AT2021xsr?19:05:07.03-11:16:29.31 Sep 2021Gaia1 Sep 202117.71 Sep 202117.7
2021xmnIa04:34:59.56-35:37:27.931 Aug 2021ATLAS31 Aug 202117.931 Aug 202117.9
2021xjuESO 186-G37Ia20:22:31.06-53:16:43.931 Aug 2021ASAS-SN24 Sep 202114.812 Oct 202115.3
AT2021xha?17:22:02.29-64:54:31.031 Aug 2021MASTER31 Aug 202117.331 Aug 202117.3
2021xjjESO 162-G18Ia07:17:42.50-55:58:52.831 Aug 2021ASAS-SN31 Aug 202117.17 Sep 202117.8
AT2021xmwYSO06:31:36.87+04:51:04.330 Aug 2021Gaia30 Aug 202115.230 Aug 202115.2
AT2021xjb?16:36:38.36-62:35:39.830 Aug 2021MASTER30 Aug 202117.030 Aug 202117.0
AT2021xms?18:40:05.77-08:07:12.230 Aug 2021Gaia30 Aug 202117.030 Aug 202117.0
AT2021xgxUGC 10607Ia16:55:09.43+26:39:49.129 Aug 2021ASAS-SN31 Aug 202117.031 Aug 202117.0
AT2021aajmulens?18:18:51.28-05:40:54.329 Aug 2021Gaia29 Aug 202117.029 Aug 202117.0
AT2021xkcQSO00:35:03.46-57:26:08.028 Aug 2021Gaia28 Aug 202117.528 Aug 202117.5
AT2021xkiYSO05:41:41.86-01:58:49.228 Aug 2021Gaia28 Aug 202117.728 Aug 202117.7
AT2021xal?16:01:54.44-08:42:35.827 Aug 2021ZTF29 Sep 202117.929 Sep 202117.9
AT2021xbhNova?05:39:34.69+57:15:15.927 Aug 2021XOSS27 Aug 202113.627 Aug 202113.6
AT2021wyyNGC 5357?13:56:06.47-30:21:23.427 Aug 2021ASAS-SN27 Aug 202116.127 Aug 202116.1
AT2021xjv?06:31:30.06+26:03:01.227 Aug 2021Gaia27 Aug 202117.227 Aug 202117.2
AT2021xjzulens?18:19:33.59-18:21:59.227 Aug 2021Gaia27 Aug 202117.827 Aug 202117.8
2021wydMCG +3-47-6Ia18:34:17.86+18:11:22.226 Aug 2021ZTF2 Sep 202117.92 Sep 202117.9
AT2021xgr?19:04:02.08-35:23:35.926 Aug 2021Gaia26 Aug 202115.015 Sep 202116.6
AT2021wyj?19:22:21.15-17:14:17.826 Aug 2021ZTF26 Aug 202117.726 Aug 202117.7
2021wwlIa-91T04:19:54.17-41:22:49.225 Aug 2021ATLAS25 Aug 202117.525 Aug 202117.5
2021wywNGC 7501Ia23:10:29.53+07:35:19.825 Aug 2021ZTF1 Sep 202116.811 Sep 202117.0
AT2021wwoLEDA 909099?14:05:55.54-15:35:36.525 Aug 2021ATLAS25 Aug 202117.925 Aug 202117.9
AT2021wve?19:01:53.19-16:10:50.624 Aug 2021ZTF24 Aug 202116.724 Aug 202116.7
2021wvwUGC 2605II03:14:47.40+40:15:47.724 Aug 2021PS124 Aug 202117.924 Aug 202117.9
2021wvdII15:10:34.96+13:27:30.424 Aug 2021ZTF29 Aug 202117.529 Aug 202117.5
AT2021wvp?18:36:40.74-44:27:12.823 Aug 2021Gaia23 Aug 202116.423 Aug 202116.4
2021wufNGC 6500Ia17:56:02.51+18:21:14.123 Aug 2021ATLAS29 Aug 202113.84 Oct 202115.5
AT2021xtd?03:49:33.20-08:08:28.322 Aug 2021ATLAS22 Aug 202117.722 Aug 202117.7
AT2021wux?19:27:02.37-52:11:14.722 Aug 2021Gaia22 Aug 202117.822 Aug 202117.8
AT2021wuj?05:33:48.49+41:08:28.321 Aug 2021Gaia21 Aug 202117.821 Aug 202117.8
AT2021xtfPGC 64029?20:02:57.52-55:57:29.521 Aug 2021Peter Marples, Greg Bock and Pat Pearl3 Sep 202116.812 Sep 202117.2
2021wkvNGC 6184Ia16:31:34.19+40:34:05.120 Aug 2021ATLAS23 Sep 202117.023 Sep 202117.0
2021wqiNGC 5513Ia14:13:08.61+20:24:57.120 Aug 2021Gaia20 Aug 202115.720 Aug 202115.7
2021wkwCGCG 027-005Ia17:43:20.05-01:41:11.620 Aug 2021ATLAS23 Sep 202117.623 Sep 202117.6
AT2021wjg?02:29:06.30+27:52:21.719 Aug 2021MASTER19 Aug 202117.519 Aug 202117.5
2021winIa05:06:19.36+22:30:44.618 Aug 2021ZTF4 Sep 202115.210 Sep 202115.4
2021wjnLEDA 981195Ia03:44:41.50-10:11:40.818 Aug 2021ATLAS5 Sep 202116.616 Sep 202117.9
2021wjbIC 4931Ia20:00:49.91-38:34:38.018 Aug 2021ASAS-SN30 Aug 202115.930 Aug 202115.9
AT2021whp?07:35:02.39+64:34:40.317 Aug 2021Gaia17 Aug 202117.917 Aug 202117.9
2021wfdMCG -3-13-52Ia05:01:41.90-15:09:52.817 Aug 2021ASAS-SN17 Aug 202117.217 Aug 202117.2
2021wcuIa07:20:25.12+32:51:05.313 Aug 2021ZTF13 Aug 202115.817 Sep 202117.7
2021vtqESO 540-G25Ia00:47:38.94-20:31:24.512 Aug 2021ZTF28 Aug 202115.57 Sep 202115.7
2021vjxIa01:47:09.93-05:37:30.39 Aug 2021ZTF16 Aug 202116.728 Aug 202117.4
2021vwxIa04:33:37.21-22:02:02.59 Aug 2021ASAS-SN28 Aug 202117.428 Aug 202117.4
2021vilIa16:07:48.10+39:11:37.18 Aug 2021ZTF24 Aug 202116.929 Aug 202117.3
2021vpvIa22:22:05.18+19:52:36.17 Aug 2021ATLAS1 Sep 202116.51 Sep 202116.5
2021vazNGC 1961II05:42:01.72+69:22:36.75 Aug 2021Koichi Itagaki6 Aug 202116.03 Sep 202116.1
AT2021uxbESO 142-G52?19:55:10.82-61:55:47.84 Aug 2021ASAS-SN18 Aug 202117.418 Aug 202117.4
2021vauUGC 3240Ia05:04:17.63+04:39:04.04 Aug 2021ASAS-SN4 Aug 202116.825 Aug 202117.5
2021usdCGCG 200-019Ia18:22:03.34+36:37:20.42 Aug 2021PS113 Aug 202116.821 Sep 202117.5
2021umhLEDA 2204848Ia02:22:50.04+42:43:29.11 Aug 2021ZTF12 Aug 202116.128 Aug 202116.7
2021uuxII16:00:00.82+50:48:05.71 Aug 2021ZTF31 Aug 202117.531 Aug 202117.5
2021ulvIIn14:15:42.24+26:37:44.931 Jul 2021ZTF21 Aug 202117.921 Aug 202117.9
2021ujxNGC 6816Ia19:44:02.03-28:24:28.030 Jul 2021ATLAS1 Sep 202117.21 Sep 202117.2
2021ucyMCG +2-8-8II02:48:10.90+13:42:59.326 Jul 2021ATLAS30 Aug 202117.530 Aug 202117.5
2021ucxCGCG 504-088Ia02:28:09.40+32:21:29.726 Jul 2021ATLAS14 Aug 202115.926 Aug 202116.2
2021ucgUGC 12188II22:47:37.66+39:52:59.425 Jul 2021ATLAS28 Aug 202117.028 Aug 202117.0
2021ubzIa-91T16:24:04.11-05:28:03.125 Jul 2021ATLAS23 Aug 202117.523 Aug 202117.5
2021tywII-pec23:05:56.46+14:21:27.724 Jul 2021ZTF2 Aug 202116.527 Aug 202116.7
2021tyfUGC 9479II14:42:33.06+04:26:15.624 Jul 2021ZTF28 Jul 202117.519 Aug 202117.9
2021tkmIC 4441Ia14:31:41.59-43:24:51.714 Jul 2021ASAS-SN29 Jul 202112.85 Oct 202115.0
2021tlmII21:59:27.44+33:10:39.08 Jul 2021ZTF29 Jul 202116.427 Aug 202117.1
2021rhuNGC 7814Ia00:03:15.43+16:08:44.51 Jul 2021ZTF19 Jul 202112.210 Sep 202115.1
2021qvrNGC 7678II23:28:26.65+22:25:11.922 Jun 2021ATLAS5 Jul 202115.010 Sep 202116.7
2021qquII03:37:51.93-14:58:33.720 Jun 2021ASAS-SN27 Aug 202115.017 Sep 202115.8
2021pitNGC 1448Ia03:44:30.21-44:37:57.310 Jun 2021ASAS-SN16 Jun 202112.331 Aug 202115.5



    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.