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 28, 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 |
|---|---|---|---|---|---|---|---|---|---|
| AT2026ahar | unclassified | 2026/10/28 | — | 17.28 | 22:05:46.121, +37:00:18.50 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agzq | unclassified | 2026/10/28 | — | 18.79 | 02:34:51.667, -59:43:02.17 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agzp | unclassified | 2026/10/28 | — | 18.95 | 04:20:07.952, -21:22:59.19 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agzr | unclassified | 2026/10/28 | — | 19.03 | 03:56:56.550, -40:23:27.34 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026ahaj | unclassified | 2026/10/28 | — | 19.21 | 03:38:44.093, -26:38:12.95 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026aham | unclassified | 2026/10/28 | — | 19.54 | 03:06:56.826, -38:20:47.17 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agzz | unclassified | 2026/10/28 | — | 19.17 | 02:04:18.685, -39:41:37.72 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agzn | unclassified | 2026/10/28 | — | 19.454 | 08:18:10.520, +33:11:44.38 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026ahab | unclassified | 2026/10/28 | — | 19.2 | 09:11:02.808, +13:24:57.60 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agzu | unclassified | 2026/10/28 | — | 18.95 | 00:56:57.472, -51:57:47.99 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agzw | unclassified | 2026/10/28 | — | 18.09 | 01:15:01.576, -33:56:15.34 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026ahan | unclassified | 2026/10/28 | — | 18.86 | 00:51:37.218, -45:53:24.76 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026ahak | unclassified | 2026/10/28 | — | 19.9 | 00:09:17.122, -25:16:22.09 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026ahaa | unclassified | 2026/10/28 | — | 19.6 | 00:15:57.342, -11:21:56.21 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026ahal | unclassified | 2026/10/28 | — | 19.86 | 23:33:51.291, -32:26:48.67 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026ahai | unclassified | 2026/10/28 | — | 19.89 | 23:31:34.360, -31:42:27.84 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026ahaq | unclassified | 2026/10/28 | — | 21.912 | 04:12:06.861, -32:50:44.22 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026ahap | unclassified | 2026/10/28 | — | 21.5212 | 04:08:42.882, -32:47:22.40 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026ahao | unclassified | 2026/10/28 | — | 21.6492 | 04:12:15.794, -56:12:44.74 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agyt | unclassified | 2026/10/28 | — | 18.9876 | 00:07:53.948, +48:39:26.03 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agyl | unclassified | 2026/10/28 | — | 19.5824 | 22:32:20.768, +06:17:58.22 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agym | unclassified | 2026/10/28 | — | 19.7193 | 22:58:03.934, -05:24:27.47 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agyp | unclassified | 2026/10/28 | — | 19.4824 | 18:07:52.772, +30:34:22.92 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agyq | unclassified | 2026/10/28 | — | 18.7473 | 17:17:19.994, +40:01:29.13 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agyu | unclassified | 2026/10/28 | — | 18.974 | 17:52:20.335, +34:04:20.57 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agyo | unclassified | 2026/10/28 | — | 19.0121 | 18:29:28.961, +35:08:00.40 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agyn | unclassified | 2026/10/28 | — | 18.8909 | 18:33:45.433, +36:34:39.98 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agzx | unclassified | 2026/10/27 | — | 19.1 | 01:17:54.096, -20:35:22.77 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agyb | unclassified | 2026/10/27 | — | 19.63 | 22:24:15.720, -46:56:36.98 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agxt | unclassified | 2026/10/27 | — | 19.7067 | 08:10:21.526, +15:30:47.07 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agyd | unclassified | 2026/10/27 | — | 19.28 | 21:57:53.911, -22:55:13.20 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agye | unclassified | 2026/10/27 | — | 19.16 | 21:33:28.861, -22:42:58.62 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agwo | unclassified | 2026/10/27 | — | 19.5803 | 08:52:07.810, +61:11:46.01 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agxu | unclassified | 2026/10/27 | — | 18.64 | 23:40:50.104, -21:02:20.39 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026ahad | unclassified | 2026/10/27 | — | 19.9 | 23:10:10.314, -15:14:20.50 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026ahae | unclassified | 2026/10/27 | — | 19.24 | 22:07:26.247, -41:36:16.59 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agyj | unclassified | 2026/10/27 | — | 19.54 | 22:23:05.765, -11:39:53.85 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agxx | unclassified | 2026/10/27 | — | 19.03 | 21:43:18.240, -14:19:49.59 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agxy | unclassified | 2026/10/27 | — | 18.82 | 21:48:35.372, -27:39:54.60 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agxz | unclassified | 2026/10/27 | — | 19.61 | 22:01:08.293, -17:42:16.34 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agyc | unclassified | 2026/10/27 | — | 19.5005 | 01:18:05.507, +20:03:27.83 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agwl | unclassified | 2026/10/27 | — | 19.0923 | 01:06:53.498, -08:37:10.14 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agyi | unclassified | 2026/10/27 | — | 19.8845 | 00:15:58.435, +06:37:05.38 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agwm | unclassified | 2026/10/27 | — | 18.328 | 19:59:05.416, -38:00:40.78 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agyv | unclassified | 2026/10/26 | — | 21.36 | 22:46:20.880, +04:58:09.09 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agxr | unclassified | 2026/10/26 | — | 19.1328 | 12:18:13.451, +20:04:35.31 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agvz | unclassified | 2026/10/26 | — | 19.3729 | 11:22:36.528, -02:04:40.43 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agwi | unclassified | 2026/10/26 | — | 19.9186 | 07:04:55.663, +18:27:52.08 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agwc | unclassified | 2026/10/26 | — | 19.8393 | 08:39:11.689, -03:58:16.60 | — | — | 📈 1 | 🔭 Pro 📖 Story |
| AT2026agxv | unclassified | 2026/10/26 | — | 18.84 | 22:52:01.750, -27:53:09.49 | — | — | 📈 1 | 🔭 Pro 📖 Story |