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
301–350 of 255,900 · All objects seen in the 7 nights
ObjectClassLast magPeakFirst seenLast seenNightsAlertsRel.RA, DecPartner
ZTF ZTF17aaajiqf RRLyrae17.73 r15.982017-12-142026-09-2667991.00141.0908, -2.1987
ZTF ZTF17aaajjmh EclBinfaded r16.282017-12-142026-09-2636471.00142.1708, -4.1298
ZTF ZTF17aabtijr RRLyraefaded r16.612017-12-142026-09-26751191.00139.9371, -0.0325
ZTF ZTF17aabtjmv RRLyrae14.71 r13.892017-12-152026-09-2639511.00139.4088, -5.7559
ZTF ZTF17aadjkjs RRLyraefaded r15.672017-12-152026-09-2644621.00140.0562, -5.9054
ZTF ZTF17aadjkns EclBin17.37 r16.892017-12-142026-09-2631361.00140.2547, -5.3411
ZTF ZTF17aadjknu EclBinfaded r16.172017-12-142026-09-2626281.00139.7133, 0.0065
ZTF ZTF18acpwlna RRLyrae15.33 r14.252018-11-052026-09-2663901.00145.7705, -4.9724
ZTF ZTF18acqlrwb RRLyrae17.45 r17.342018-11-052026-09-2647611.00145.3929, -5.8369
ZTF ZTF18acqlurd EclBinfaded r17.052017-12-182026-09-26661361.00139.0910, -6.1534
ZTF ZTF18acqlxpc Unknown16.76 r16.762018-11-052026-09-2638641.00141.8348, -6.3295
ZTF ZTF18acrxoqs RRLyrae16.87 r15.542018-11-052026-09-2647611.00141.7572, -0.1595
ZTF ZTF18acrxoto RRLyraefaded r16.992017-12-182026-09-2645771.00139.8078, -3.7258
ZTF ZTF18acrxpcz CataclyV*AT 2021dbifaded r16.422017-12-142026-09-2655991.00139.9025, -5.9221
ZTF ZTF18acssqgf Starfaded r18.302018-12-032026-09-2647771.00140.6415, 0.9223
ZTF ZTF18acvwfey Unknownfaded r18.172018-11-072026-09-2611111.00142.3300, -1.4803
ZTF ZTF18aczeize Unknownfaded r17.422018-12-202026-09-26711141.00142.8505, -5.5941
ZTF ZTF19aadwulo Unknown18.08 r17.592018-11-282026-09-26330.04140.6671, -3.6361
ZTF ZTF19aairlaa AGN18.56 r18.192019-02-092026-09-2646711.00140.2517, -5.2628
ZTF ZTF19aaixdcr Unknownfaded r—2019-02-092026-09-26110.79139.8511, -4.7779
ZTF ZTF19aakceiw Unknown17.60 r17.162018-11-282026-09-2613131.00140.9227, -2.0877
ZTF ZTF19aakctdh Unknownfaded r—2019-02-092026-09-26110.75140.2373, -4.9401
ZTF ZTF19aarsmrc AGNfaded r19.252018-11-202026-09-2649761.00142.3910, -3.7069
ZTF ZTF19adavtyx Unknownfaded r18.332019-02-092026-09-2650711.00142.4487, -5.8992
ZTF ZTF22aajkowd Unknown14.89 r14.892017-12-152026-09-26111.00140.5272, -5.7680
ZTF ZTF22abuluhw RRLyraefaded r16.952017-12-142026-09-269111.00141.2683, 0.5269
ZTF ZTF23abluyzj Unknownfaded r17.932020-10-052026-09-2634421.00142.1503, 0.9339
ZTF ZTF26abxsxrq Solar System MPC18.60 r18.602026-09-262026-09-26111.00142.2477, 0.0491
ZTF ZTF17aaappnt RRLyrae16.33 r16.312017-11-192026-09-2623321.00151.3518, 23.5574
ZTF ZTF17aaclogk EclBin15.24 r14.902017-12-032026-09-2658921.00147.1552, 25.0747
ZTF ZTF17aacqkvi EclBinfaded r15.112017-10-192026-09-2623281.00151.4527, 23.5447
ZTF ZTF17aacqkxx RRLyraefaded r16.092017-10-192026-09-2658901.00150.0472, 24.8644
ZTF ZTF17aacqrnd RRLyraefaded r16.532017-10-192026-09-26751461.00147.5692, 29.0365
ZTF ZTF17aadqhtf Seyfert1faded r17.872017-10-282026-09-26991.00151.0108, 28.9264
ZTF ZTF18aahesrm Unknownfaded r17.672017-10-192026-09-261042581.00147.5430, 27.6829
ZTF ZTF18aahouhg RRLyraefaded r17.192017-12-142026-09-26932181.00147.4851, 24.5022
ZTF ZTF18aawxekb Unknown17.61 r17.272018-12-282026-09-2654751.00151.2870, 22.7711
ZTF ZTF18accngox Blazar18.35 r18.232018-02-092026-09-2653821.00149.2077, 25.2545
ZTF ZTF18accvnal Seyfert118.34 r18.332018-05-242026-09-2663931.00149.5448, 25.6789
ZTF ZTF18acrdrhy Unknownfaded r16.872018-11-252026-09-2615181.00148.5280, 23.6842
ZTF ZTF18acyxuzt QSOfaded r18.852018-12-192026-09-26891541.00152.7051, 25.4772
ZTF ZTF18adazeyr Unknownfaded r—2018-12-282026-09-26121.00150.5699, 27.7967
ZTF ZTF18adiqeqe Seyfert1AT 2019wkm18.12 r17.562018-04-062026-09-26941961.00154.7785, 23.3106
ZTF ZTF18adojumx QSOfaded r18.392018-11-032026-09-26651131.00148.3118, 25.1181
ZTF ZTF19aaznzll Unknownfaded r18.602018-11-062026-09-2670991.00152.2174, 25.2180
ZTF ZTF20aaawwkl Seyfert1AT 2021kir17.90 r17.492019-01-302026-09-26811311.00152.5609, 23.1089
ZTF ZTF20aakqoul Unknown17.29 r16.712017-12-182026-09-2625271.00148.9048, 26.5715
ZTF ZTF25aayjggp RRLyraefaded r17.532017-10-282026-09-2661941.00147.0982, 27.0282
ZTF ZTF26abxswub Solar System MPC15.62 r15.622026-09-262026-09-26111.00153.0089, 23.4231
ZTF ZTF26abxswvd Solar System MPC16.87 r16.872026-09-262026-09-26111.00151.7713, 23.0336