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 31, 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 |
|---|---|---|---|---|---|---|---|---|---|
| AT2026ahnz | unclassified | 2026/10/30 | — | 20.49 | 23:08:42.950, +03:58:36.51 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahnn | unclassified | 2026/10/30 | — | 19.59 | 03:35:04.033, -05:37:54.69 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahlr | unclassified | 2026/10/30 | — | 22.9322 | 03:29:13.916, -27:09:30.29 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahig | unclassified | 2026/10/30 | — | 22.2304 | 03:34:35.655, -26:22:27.39 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahib | unclassified | 2026/10/30 | — | 20.8507 | 03:26:01.860, -27:10:32.64 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahhw | unclassified | 2026/10/30 | — | 21.6295 | 03:29:33.546, -26:26:42.40 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahhk | unclassified | 2026/10/30 | — | 22.244 | 03:25:56.478, -26:52:51.13 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahll | unclassified | 2026/10/30 | — | 22.4945 | 04:10:05.945, -46:01:34.51 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahix | unclassified | 2026/10/30 | — | 22.4742 | 04:07:41.240, -46:47:59.81 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahkh | unclassified | 2026/10/30 | — | 23.3836 | 04:15:42.240, -48:55:29.39 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahgf | unclassified | 2026/10/30 | — | 22.1893 | 02:19:56.201, -02:57:28.82 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahkg | unclassified | 2026/10/30 | — | 23.4526 | 02:27:13.270, -06:06:25.12 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahjs | unclassified | 2026/10/30 | — | 22.5454 | 02:24:40.542, -06:38:44.77 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahmr | unclassified | 2026/10/30 | — | 21.6229 | 00:38:19.297, -41:55:33.23 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahkl | unclassified | 2026/10/30 | — | 22.7826 | 04:09:33.094, -49:08:15.59 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahgs | unclassified | 2026/10/30 | — | 22.6813 | 04:11:08.195, -49:29:08.11 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahir | unclassified | 2026/10/30 | — | 22.1498 | 04:18:41.502, -46:33:42.48 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahks | unclassified | 2026/10/30 | — | 22.8788 | 03:51:59.203, -48:48:01.59 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahmo | unclassified | 2026/10/30 | — | 22.275 | 03:53:19.423, -49:39:50.65 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahif | unclassified | 2026/10/30 | — | 20.619 | 03:54:34.891, -50:00:14.89 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahld | unclassified | 2026/10/30 | — | 22.6928 | 04:06:32.189, -47:09:15.68 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahic | unclassified | 2026/10/30 | — | 21.4736 | 04:07:14.698, -48:51:44.14 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahlx | unclassified | 2026/10/30 | — | 22.3249 | 04:02:05.594, -49:29:07.12 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahlh | unclassified | 2026/10/30 | — | 21.7511 | 03:50:26.458, -50:16:58.07 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahkc | unclassified | 2026/10/30 | — | 22.5342 | 03:39:30.463, -27:28:58.96 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahkd | unclassified | 2026/10/30 | — | 22.4773 | 03:27:11.617, -29:05:58.90 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahly | unclassified | 2026/10/30 | — | 22.7485 | 03:37:55.315, -27:32:02.18 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahln | unclassified | 2026/10/30 | — | 20.5682 | 03:36:02.423, -28:56:22.45 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahlm | unclassified | 2026/10/30 | — | 22.56 | 03:38:49.294, -27:49:28.56 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahlg | unclassified | 2026/10/30 | — | 21.5817 | 03:28:30.106, -28:38:51.88 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahlc | unclassified | 2026/10/30 | — | 21.7112 | 03:31:17.681, -27:20:27.95 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahhp | unclassified | 2026/10/30 | — | 21.9787 | 03:37:05.654, -27:49:49.10 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahhl | unclassified | 2026/10/30 | — | 21.3224 | 03:31:02.456, -27:19:59.49 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahki | unclassified | 2026/10/30 | — | 23.1255 | 02:17:44.346, -03:31:09.78 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahjh | unclassified | 2026/10/30 | — | 22.8608 | 02:19:39.216, -05:10:17.72 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahjg | unclassified | 2026/10/30 | — | 22.8465 | 02:20:53.506, -06:08:18.95 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahkx | unclassified | 2026/10/30 | — | 22.6683 | 02:23:26.173, -03:22:41.19 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahjt | unclassified | 2026/10/30 | — | 22.0178 | 02:29:06.562, -05:01:30.96 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahiu | unclassified | 2026/10/30 | — | 21.6741 | 02:27:45.097, -03:47:28.69 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahkv | unclassified | 2026/10/30 | — | 22.495 | 02:18:03.672, -03:56:25.53 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahmq | unclassified | 2026/10/30 | — | 22.0611 | 02:23:44.659, -05:28:02.33 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahmm | unclassified | 2026/10/30 | — | 23.0245 | 02:19:41.759, -03:25:57.49 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahlw | unclassified | 2026/10/30 | — | 22.2493 | 02:27:41.128, -05:07:45.75 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahkw | unclassified | 2026/10/30 | — | 22.2354 | 02:18:40.188, -03:25:03.94 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahko | unclassified | 2026/10/30 | — | 22.959 | 02:28:17.338, -04:32:56.12 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahjn | unclassified | 2026/10/30 | — | 22.2537 | 02:24:11.845, -03:36:03.99 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahke | unclassified | 2026/10/30 | — | 22.785 | 00:47:36.229, -43:24:26.05 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahge | unclassified | 2026/10/30 | — | 22.4965 | 00:46:43.134, -43:06:20.78 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahmf | unclassified | 2026/10/30 | — | 23.3583 | 00:37:05.396, -44:49:40.44 | — | — | — | 🔭 Pro 📖 Story |
| AT2026ahmj | unclassified | 2026/10/30 | — | 23.0831 | 00:35:43.875, -44:06:14.19 | — | — | — | 🔭 Pro 📖 Story |