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
51–100 of 255,900 · All objects seen in the 7 nights
ObjectClassLast magPeakFirst seenLast seenNightsAlertsRel.RA, DecPartner
ZTF ZTF17aaapifo EclBinfaded r14.892017-12-142026-09-2636431.00139.2726, -2.7943
ZTF ZTF17aadjkur EclBinfaded r15.102017-12-152026-09-2630401.00139.6325, -3.3406
ZTF ZTF18acssoly Unknownfaded r—2018-12-032026-09-26110.86139.6550, -2.8001
ZTF ZTF19aabxenf Unknownfaded r17.242019-01-082026-09-26220.99139.6072, -2.8272
ZTF ZTF19aadrfnx Unknownfaded r—2019-01-202026-09-26111.00139.4160, -3.2374
ZTF ZTF19aaiwpqp Unknownfaded r—2019-02-092026-09-26111.00139.7100, -3.0044
ZTF ZTF19aajeufm Starfaded r—2019-02-092026-09-26110.99140.5987, -1.9881
ZTF ZTF19aajfadp Unknownfaded r—2019-02-092026-09-26110.65140.5363, -2.3121
ZTF ZTF19aajgond Unknownfaded r16.472019-01-302026-09-26330.95139.5512, -3.1281
ZTF ZTF20aaoulhy Unknownfaded r—2020-02-192026-09-26110.97139.6972, -3.0571
ZTF ZTF20aaucmgg Unknownfaded r18.122019-02-092026-09-26220.99139.5419, -3.2964
ZTF ZTF20aawtctz Unknownfaded r—2020-04-272026-09-26110.97139.7246, -2.8944
ZTF ZTF24aageoue Unknownfaded r—2019-02-092026-09-26110.96139.2740, -3.1630
ZTF ZTF24abpiojn Unknownfaded r—2019-02-092026-09-26110.99139.5566, -3.1101
ZTF ZTF26abxsyvh Unknownfaded r—2026-09-262026-09-26110.98139.4121, -3.0664
ZTF ZTF26abxsyvi Unknownfaded r—2020-02-172026-09-26111.00139.6858, -3.0025
ZTF ZTF26abxsykh Solar System MPC16.99 r16.992026-09-262026-09-26111.00151.7734, 23.0328
ZTF ZTF17aaagvsv RRLyrae17.40 r16.602017-12-142026-09-2670971.00140.3513, 13.8045
ZTF ZTF17aaaolus EclBinfaded r14.632017-12-142026-09-2637471.00142.2731, 13.2253
ZTF ZTF17aaapgjw EclBinfaded r16.642017-12-142026-09-2621231.00140.4963, 14.8269
ZTF ZTF17aaazdpg Unknownfaded r—2017-12-172026-09-26110.03142.9846, 12.7770
ZTF ZTF17aaazdpy Unknownfaded r—2017-12-172026-09-26110.02142.8680, 12.8993
ZTF ZTF17aabttlg EclBinfaded r14.112017-12-142026-09-2629411.00140.9333, 8.8312
ZTF ZTF18aaackei EclBinfaded r16.482018-01-112026-09-2652701.00145.5044, 10.2619
ZTF ZTF18aaajbyd Unknown17.39 r17.392018-01-112026-09-26220.98141.7698, 8.3874
ZTF ZTF18aabjizg RRLyraefaded r16.682018-01-112026-09-26691191.00145.8694, 11.4238
ZTF ZTF18aabjpyi EclBinfaded r18.062018-01-112026-09-2614181.00144.3129, 10.7449
ZTF ZTF18aahpbal Seyfert1AT 2018luofaded r17.662018-03-302026-09-2647611.00144.1710, 10.2378
ZTF ZTF18aakaocz Type2Cep14.37 r14.032018-02-242026-09-2651721.00141.7539, 14.2029
ZTF ZTF18accnfth Unknownfaded r15.162018-04-022026-09-2633441.00141.8351, 9.1434
ZTF ZTF18accnfvw QSOfaded r18.502018-05-242026-09-2642611.00139.8763, 11.1483
ZTF ZTF18accngit Seyfert118.18 r18.182018-11-032026-09-26361.00140.3808, 13.8469
ZTF ZTF18acgvixl Unknownfaded r—2018-11-092026-09-26110.79146.5089, 11.3831
ZTF ZTF18adakkta Unknownfaded r—2018-12-242026-09-26110.85140.1656, 10.2759
ZTF ZTF19aadeyjs Unknownfaded r17.102017-12-172026-09-269111.00142.5026, 12.9891
ZTF ZTF19aasyupw Unknownfaded r—2019-04-292026-09-26110.56146.0731, 10.3552
ZTF ZTF19aasyxka Unknownfaded r—2019-04-292026-09-26110.81142.8432, 13.0183
ZTF ZTF19aasyxkt Unknownfaded r—2017-12-172026-09-26110.98142.5227, 13.0495
ZTF ZTF19acifrfh EclBinfaded r17.182017-12-142026-09-2629361.00142.8675, 14.3800
ZTF ZTF20aaucmun Unknownfaded r—2017-12-172026-09-26110.97142.4226, 12.7698
ZTF ZTF20aaucmuq Unknownfaded r—2017-12-172026-09-26110.97142.4250, 12.8903
ZTF ZTF20aaucmvi Unknownfaded r—2020-01-142026-09-26110.99142.8562, 12.9439
ZTF ZTF20aaucmwe Unknownfaded r—2020-04-012026-09-26110.41142.7423, 12.9745
ZTF ZTF20aaucmwg Unknownfaded r—2020-04-012026-09-26110.99142.7394, 13.0411
ZTF ZTF20aaucmwk Unknownfaded r—2020-04-012026-09-26110.99142.5901, 12.8108
ZTF ZTF21aaqvvvt Seyfert1AT 2021kdafaded r16.062017-12-172026-09-2646541.00141.5136, 12.7344
ZTF ZTF21acigqej Unknownfaded r—2021-10-172026-09-26110.73146.4286, 11.3686
ZTF ZTF24abtzfyp Unknownfaded r—2019-02-092026-09-26110.41142.7379, 12.9745
ZTF ZTF24abtzfyr Unknownfaded r—2024-11-252026-09-26110.99142.8158, 12.9501
ZTF ZTF26abxsyim Solar System MPC17.10 r17.102026-09-262026-09-26111.00141.8778, 13.0867