The Open Supernova Catalog
A community-curated astronomical repository indexing 110,222+ explosive transients, multi-band optical light curves, and calibrated spectra from 1000 AD to 2026+.
Total Transients
110,222
Historical & modern survey events
Calibrated Spectra
20,965
Multi-epoch spectroscopic time series
Photometric Epochs
673,154
Multi-band UV, optical & NIR observations
API & Integrations
REST + MCP
Zero-token API, IVOA cone search & AI tools
Newest transients on file
Ages are counted from today, October 30, 2026, using each event's discovery date from the Transient Name Server. Transients without a published classification report yet are shown as unclassified.
| Designation | Type | Discovery Date ▼ | Redshift z | Peak Mag | Coordinates (J2000) | Host Galaxy | Spectra | Light Curve | Actions |
|---|---|---|---|---|---|---|---|---|---|
| AT2026ahcu | unclassified | 2026/10/30 | — | 22.5 | 23:48:20.740, +01:02:39.87 | SDSS J234820.77+010241.3 | — | — | 🔭 Pro 📖 Story |
| AT2026ahcv | unclassified | 2026/10/30 | — | 21.49 | 22:44:36.153, -08:16:09.71 | SDSS J224435.96-081615.5 | — | — | 🔭 Pro 📖 Story |
| AT2026ahch | unclassified | 2026/10/29 | — | 19.49 | 05:06:09.858, -39:29:11.35 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahba | unclassified | 2026/10/29 | — | 19.1029 | 12:09:41.154, +10:35:15.65 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahcd | unclassified | 2026/10/29 | — | 19.8072 | 10:45:21.749, +16:09:53.70 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahco | unclassified | 2026/10/29 | — | 19.9 | 01:56:16.603, -06:04:44.79 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahcf | unclassified | 2026/10/29 | — | 20.04 | 03:35:07.508, -01:27:53.30 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbg | unclassified | 2026/10/29 | — | 20.09 | 01:12:55.322, -04:15:57.97 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahcp | unclassified | 2026/10/29 | — | 19.83 | 01:33:43.431, -19:41:36.29 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahce | unclassified | 2026/10/29 | — | 19.92 | 23:54:58.783, -32:50:58.24 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbz | unclassified | 2026/10/29 | — | 20.8235 | 03:33:45.312, -34:36:42.62 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbw | unclassified | 2026/10/29 | — | 20.8212 | 03:38:32.748, -37:45:45.22 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbc | unclassified | 2026/10/29 | — | 20.66 | 04:19:59.672, -57:46:04.79 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahaw | unclassified | 2026/10/29 | — | 13.98 | 00:35:16.317, +34:30:00.50 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahax | unclassified | 2026/10/29 | — | 18.225 | 20:46:39.695, -51:10:42.84 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahct | unclassified | 2026/10/29 | — | 18.68 | 18:38:54.302, -44:56:18.69 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahcr | unclassified | 2026/10/28 | — | 19.43 | 23:25:00.296, +09:27:07.88 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahat | unclassified | 2026/10/28 | — | 18.23 | 23:42:41.229, +16:16:59.68 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahar | unclassified | 2026/10/28 | — | 17.28 | 22:05:46.121, +37:00:18.50 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbl | unclassified | 2026/10/28 | — | 19.99 | 21:50:38.667, +12:09:19.40 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbm | unclassified | 2026/10/28 | — | 19.1 | 08:27:52.274, -09:29:06.63 | — | — | — | 🔭 Pro 📖 Story |
| AT2026agzq | unclassified | 2026/10/28 | — | 18.79 | 02:34:51.667, -59:43:02.17 | — | — | — | 🔭 Pro 📖 Story |
| SN2026agzp | SN | 2026/10/28 | 0.072 | 18.95 | 04:20:07.952, -21:22:59.19 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahcn | unclassified | 2026/10/28 | — | 18.82 | 04:13:50.187, -51:00:28.94 | — | — | — | 🔭 Pro 📖 Story |
| AT2026agzr | unclassified | 2026/10/28 | — | 19.03 | 03:56:56.550, -40:23:27.34 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahaj | unclassified | 2026/10/28 | — | 19.21 | 03:38:44.093, -26:38:12.95 | — | — | — | 🔭 Pro 📖 Story |
| AT2026aham | unclassified | 2026/10/28 | — | 19.54 | 03:06:56.826, -38:20:47.17 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbd | unclassified | 2026/10/28 | — | 19.29 | 02:53:38.208, -05:55:45.60 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbe | unclassified | 2026/10/28 | — | 19.34 | 02:16:45.156, -34:02:32.60 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbn | unclassified | 2026/10/28 | — | 19.32 | 01:41:58.149, -52:49:58.63 | — | — | — | 🔭 Pro 📖 Story |
| AT2026agzz | unclassified | 2026/10/28 | — | 19.17 | 02:04:18.688, -39:41:37.49 | — | — | — | 🔭 Pro 📖 Story |
| AT2026agzn | unclassified | 2026/10/28 | — | 19.454 | 08:18:10.520, +33:11:44.38 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahab | unclassified | 2026/10/28 | — | 19.2 | 09:11:02.808, +13:24:57.60 | UGC 4827 | — | — | 🔭 Pro 📖 Story |
| AT2026agzu | unclassified | 2026/10/28 | — | 18.95 | 00:56:57.472, -51:57:47.99 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahcg | unclassified | 2026/10/28 | — | 19.59 | 01:10:01.113, -23:48:34.94 | — | — | — | 🔭 Pro 📖 Story |
| SN2026agzw | SN Ia | 2026/10/28 | 0.056022 | 18.09 | 01:15:01.576, -33:56:15.34 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahcj | unclassified | 2026/10/28 | — | 19.92 | 01:20:27.679, -36:52:56.50 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahan | unclassified | 2026/10/28 | — | 18.86 | 00:51:37.218, -45:53:24.81 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahcm | unclassified | 2026/10/28 | — | 19.79 | 00:43:49.336, -28:36:40.31 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahak | unclassified | 2026/10/28 | — | 19.9 | 00:09:17.122, -25:16:22.09 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbo | unclassified | 2026/10/28 | — | 19.64 | 23:56:44.686, -41:35:12.03 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbf | unclassified | 2026/10/28 | — | 20.06 | 01:22:56.276, -19:11:13.88 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbp | unclassified | 2026/10/28 | — | 20.04 | 23:44:09.035, -31:06:36.77 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbr | unclassified | 2026/10/28 | — | 19.81 | 00:10:52.627, -06:43:01.37 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbs | unclassified | 2026/10/28 | — | 19.87 | 23:32:04.049, -24:41:07.50 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahcl | unclassified | 2026/10/28 | — | 20.36 | 23:09:34.393, -38:16:21.69 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahbt | unclassified | 2026/10/28 | — | 19.87 | 23:30:44.432, -27:55:55.92 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahaa | unclassified | 2026/10/28 | — | 19.6 | 00:15:57.342, -11:21:56.21 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahal | unclassified | 2026/10/28 | — | 19.86 | 23:33:51.291, -32:26:48.67 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahai | unclassified | 2026/10/28 | — | 19.89 | 23:31:34.360, -31:42:27.84 | — | — | — | 🔭 Pro 📖 Story |