Transient Explorer

What am I looking at?

Every night the Rubin (LSST) and ZTF telescopes image the sky and flag anything that changed since last time: a supernova going off, a star flaring, an asteroid passing through. Each flag is an alert. The Fink broker classifies them, and this site shows what they are and where.

Pages

  • Dashboard: how many alerts and objects arrived in a window, what kinds, where on the sky, and the brightest new supernova candidates.
  • Sky: the map. Most of what follows is about it.
  • Objects: the same objects as a table you can sort, filter by the broker's label or TNS type, and page through; click one for its light curve and images.

Search

  • An object id (ZTF26abvkmbu, a Rubin id, or the first few characters), a TNS name (SN 2026abc), coordinates (35.71 -4.75 or 02:22:50 -04:45:00, add r=10' for a radius), a deep-drilling field (COSMOS), a class (SN Ia, EclBin) or any name astronomers use (M31).

On the map: zoom to go deeper

  • Whole sky (wider than 20°): a heatmap of how many objects were seen in each patch of sky.
  • Region (1°–20°): a finer heatmap plus numbered badges. The number is the count of objects, the color is their most common class, and a white ring means something new in the last night.
  • Objects (under 1°): one dot per object. A white ring means it was seen last night, and a white center means it has been detected only once so far. Click a dot for its light curve, classification and images.

Drag to pan, scroll or pinch to zoom, or click a badge to zoom into it.

Filters

  • Window: how far back to look, from last night to a year.
  • Active / new: objects detected in the window, or only those first seen in it.
  • Class: most alerts are solar-system objects (asteroids). Pick Non-Solar System to hide them and see what else is out there.
  • Brightness (≤ 20, ≤ 18, ≤ 16): only objects at least that bright. Smaller magnitudes are brighter.
  • History (2+ nights, …): only objects seen on several nights, which filters out one-off artifacts.

Classes

  • SN candidate
  • AGN / nuclear
  • Variable star
  • Solar system
  • Cataloged
  • Unknown
  • Low reliability
  • Other

The data is refreshed nightly. Every view is a link: on the map the URL records the position, zoom, filters and selected object, so Copy link shares exactly what you see.

Made by jgriz

Objects

Objects
Survey
Bucket
Clear
1–31 of 31 · SN candidate objects first seen in the 7 nights
ObjectClassLast magPeakFirst seenLast seenNightsAlertsRel.RA, DecPartner
ZTF ZTF26abxpksn SN candidate18.58 r18.582026-09-262026-09-26121.00280.1560, 7.9884
ZTF ZTF26abxnigv SN candidateAT 2026acye16.32 r16.322026-09-252026-09-26241.0086.1129, 33.6501
ZTF ZTF26abxkuhv SN candidate15.18 r15.152026-09-252026-09-26241.00315.6261, -19.4616
ZTF ZTF26abxkpqq SN candidate17.86 g17.452026-09-252026-09-26221.00287.9461, 2.5471
ZTF ZTF26abxhltc SN candidateAT 2026acyc16.24 g15.872026-09-242026-09-26221.00101.0575, 10.3919
ZTF ZTF26abxgruz SN candidateAT 2026abqi18.85 g18.852026-09-242026-09-26111.0044.2959, -27.5339
ZTF ZTF26abwwiuv SN candidateAT 2026acxk19.76 g19.762026-09-222026-09-25111.0071.6357, 0.0965
ZTF ZTF26abxdhau SN candidateAT 2026acwr19.45 r19.452026-09-222026-09-26111.00106.4067, 35.6541
ZTF ZTF26abwubav SN candidateAT 2026acrs19.23 g19.232026-09-222026-09-26331.008.3707, 17.9200
ZTF ZTF26abwxqcl SN candidateAT 2026acuo19.60 g19.522026-09-222026-09-25121.0069.1132, 9.3500
ZTF ZTF26abwubvp SN candidateAT 2026acul19.40 r19.262026-09-222026-09-25341.0013.7124, 10.1669
ZTF ZTF26abwrwdz SN candidateAT 2026acrf18.43 r18.432026-09-222026-09-26451.0038.4748, -20.2044
ZTF ZTF26abwrxtr SN candidateAT 2026acug19.08 g18.852026-09-222026-09-26461.0022.1642, 12.1779
ZTF ZTF26abwqrzr SN candidate19.21 g19.212026-09-222026-09-22111.00286.6461, -7.2405
ZTF ZTF26abwqsgt Kilonova candidate18.98 g18.152026-09-222026-09-25351.00284.9374, -10.5788
ZTF ZTF26abwqswb SN candidateAT 2026acwy19.14 g19.082026-09-222026-09-22121.00275.3101, 3.8156
ZTF ZTF26abwqheb SN candidateAT 2026acri19.25 r19.252026-09-212026-09-25221.00120.9788, 5.4557
ZTF ZTF26abwpoov SN candidateSN Ia18.44 g18.152026-09-202026-09-25121.0073.9667, -20.5817
ZTF ZTF26abwppam SN candidateAT 2026zmn19.53 r19.532026-09-202026-09-26111.0080.2892, -11.3345
ZTF ZTF26abwppvo SN candidateAT 2026abzw19.47 r19.472026-09-202026-09-26221.0081.4127, -7.5655
ZTF ZTF26abwpdum SN candidateAT 2026acru18.90 r18.752026-09-202026-09-26241.00104.0446, 26.7012
ZTF ZTF26abwoihr Early SN Ia candidateSN Ia17.21 r17.212026-09-202026-09-26581.0027.2164, 10.5864
ZTF ZTF18abrdffn SN candidate19.17 g19.172026-09-202026-09-20111.0028.3983, -2.7787
ZTF ZTF26abwofcp SN candidate20.52 g20.522026-09-202026-09-20111.0039.0055, 3.9177
ZTF ZTF26abwolug SN candidate20.50 g20.502026-09-202026-09-20111.0039.2261, 4.0438
ZTF ZTF26abwoluh SN candidate20.65 g20.652026-09-202026-09-20111.0038.9878, 3.9381
ZTF ZTF26abwoyvd SN candidate19.95 g19.952026-09-202026-09-20111.0061.6443, 32.6453
ZTF ZTF26abwoyve SN candidate20.23 g20.232026-09-202026-09-20111.0061.5720, 33.0155
ZTF ZTF26abwmtnv SN candidateAT 2026acrz19.85 g19.852026-09-202026-09-22221.0021.5397, -14.6211
ZTF ZTF26abwjyij SN candidate19.79 g19.792026-09-202026-09-20111.00314.6565, 3.9242
ZTF ZTF26abwjyil SN candidate20.17 g20.172026-09-202026-09-20111.00314.9545, 3.9174