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
251–300 of 255,900 · All objects seen in the 7 nights
ObjectClassLast magPeakFirst seenLast seenNightsAlertsRel.RA, DecPartner
ZTF ZTF18aabjjne EclBin16.76 r16.692017-12-142026-09-2654821.00143.7676, 5.0818
ZTF ZTF18acusetg SupernovaSNfaded r17.582018-04-022026-09-26801471.00144.0363, 6.2576
ZTF ZTF18acuseuu Seyfert1AT 2018knhfaded r16.462018-12-092026-09-26571071.00144.2542, 1.0955
ZTF ZTF18acwzity Unknown13.61 r13.442018-04-022026-09-2625371.00142.6090, 7.2056
ZTF ZTF18acxcoqr RRLyraefaded r16.862018-04-022026-09-26741191.00142.4203, 4.8131
ZTF ZTF18aczdenj Seyfert1AT 2018lapfaded r18.112018-11-072026-09-26781391.00144.5617, 2.0065
ZTF ZTF18aczejib QSOfaded r18.432018-11-172026-09-26601031.00142.8241, 3.5222
ZTF ZTF19aaacyzv QSOfaded r18.102018-11-172026-09-26761341.00142.3747, 7.1849
ZTF ZTF19aafmfuy Starfaded r18.972018-12-282026-09-26221.00140.7600, 3.5495
ZTF ZTF19aagpilx QSOfaded r18.562018-12-282026-09-26761331.00143.1216, 6.2849
ZTF ZTF19aajflvo Unknown17.59 r16.892019-02-092026-09-26220.98142.4110, 6.6292
ZTF ZTF19aajfrsa Unknownfaded r—2017-12-162026-09-26110.96142.3875, 7.6940
ZTF ZTF19aajfrsh Unknownfaded r—2017-12-162026-09-26110.86142.2992, 7.4437
ZTF ZTF19aajfrsm Unknownfaded r—2019-02-092026-09-26110.74142.2005, 7.5057
ZTF ZTF19aajfrsx Unknownfaded r—2019-02-092026-09-26110.98142.2030, 7.4911
ZTF ZTF19aajfrvp Starfaded r—2019-02-092026-09-26110.99142.2541, 7.4724
ZTF ZTF19aajfxzx Unknown18.39 r18.392019-02-092026-09-26111.00141.8443, 6.6784
ZTF ZTF19aannzfb Seyfert118.90 r18.192019-03-272026-09-26852291.00142.0608, 0.9421
ZTF ZTF19aapujlb QSOfaded r18.442019-03-142026-09-2653921.00141.7362, 4.2703
ZTF ZTF19aasqqhh Unknownfaded r—2018-12-302026-09-26110.77142.3819, 7.9344
ZTF ZTF20actklil QSO17.50 r17.492019-02-262026-09-26721171.00145.0881, 3.5293
ZTF ZTF21aargggi Unknown18.30 r18.302021-04-012026-09-26110.96141.9426, 6.6416
ZTF ZTF22ablqbzc Unknownfaded r—2022-10-062026-09-26110.96142.2359, 7.8362
ZTF ZTF22abswrpo Unknownfaded r—2020-10-292026-09-26110.99142.0370, 7.5403
ZTF ZTF26abxsxkl Solar System MPC15.69 r15.692026-09-262026-09-26111.00142.1170, 1.2260
ZTF ZTF26abxsxof Unknown17.17 r17.172026-09-262026-09-26111.00144.6803, 3.6895
ZTF ZTF26abxsxwk Solar System MPC18.10 r18.102026-09-262026-09-26111.00144.0630, 1.3638
ZTF ZTF26abxsxwt Solar System MPC17.18 r17.182026-09-262026-09-26111.00145.5495, 3.3758
ZTF ZTF26abxsxwu Solar System MPC18.35 r18.352026-09-262026-09-26111.00145.4863, 3.0775
ZTF ZTF26abxsxxn Solar System MPC17.76 r17.762026-09-262026-09-26111.00143.6164, 6.0042
ZTF ZTF26abxsxxo Solar System MPC18.14 r18.142026-09-262026-09-26111.00143.5576, 6.0099
ZTF ZTF26abxsxyg Solar System candidate16.61 r16.612026-09-262026-09-26111.00145.7406, 0.8553
ZTF ZTF26abxsxys Solar System MPC18.09 r18.092026-09-262026-09-26111.00142.3167, 8.0257
ZTF ZTF26abxsxza Solar System MPC17.19 r17.192026-09-262026-09-26111.00142.2271, 4.4133
ZTF ZTF26abxsybk Solar System MPC18.42 r18.422026-09-262026-09-26110.99141.0446, 2.8665
ZTF ZTF26abxsyep Solar System MPC16.66 r16.662026-09-262026-09-26111.00142.3591, 6.6567
ZTF ZTF26abxsyeq Solar System MPC17.47 r17.472026-09-262026-09-26111.00142.4079, 7.2315
ZTF ZTF26abxsyjl Solar System MPC16.72 r16.722026-09-262026-09-26111.00141.2237, 6.0256
ZTF ZTF26abxsyjm Solar System MPC17.23 r17.232026-09-262026-09-26111.00140.7677, 6.0746
ZTF ZTF26abxsyku Solar System MPC17.47 r17.472026-09-262026-09-26111.00147.3124, 3.1947
ZTF ZTF26abxsytw Tracklet17.65 r17.652026-09-262026-09-26110.86146.4072, 2.9716
ZTF ZTF26abxsytx Tracklet17.56 r17.562026-09-262026-09-26110.50146.4238, 2.9679
ZTF ZTF26abxsytz Tracklet17.64 r17.642026-09-262026-09-26110.00146.4322, 2.9660
ZTF ZTF26abxsyub Tracklet17.65 r17.652026-09-262026-09-26110.10146.4913, 2.9523
ZTF ZTF26abxsyuc Tracklet17.68 r17.682026-09-262026-09-26110.01146.5167, 2.9465
ZTF ZTF26abxsyud Tracklet17.84 r17.842026-09-262026-09-26110.06146.4493, 2.9620
ZTF ZTF26abxsyue Tracklet17.72 r17.722026-09-262026-09-26110.07146.4997, 2.9503
ZTF ZTF26abxsyuf Tracklet17.64 r17.642026-09-262026-09-26110.08146.4157, 2.9696
ZTF ZTF26abxsyug Tracklet17.53 r17.532026-09-262026-09-26110.51146.5084, 2.9483
ZTF ZTF26abxsyuh Tracklet17.80 r17.802026-09-262026-09-26111.00146.5250, 2.9444