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
151–200 of 255,900 · All objects seen in the 7 nights
ObjectClassLast magPeakFirst seenLast seenNightsAlertsRel.RA, DecPartner
ZTF ZTF19aagpdyc Unknown16.16 r15.492019-04-292026-09-26220.96147.0859, 15.6991
ZTF ZTF19aaikujv QSO18.23 r18.032018-12-302026-09-26631171.00144.5144, 18.3164
ZTF ZTF19aaixnuw Unknown18.45 r18.452018-12-292026-09-2615171.00143.7753, 17.4499
ZTF ZTF19aajghqg Unknown14.99 r14.992019-02-092026-09-26110.15147.3652, 15.2810
ZTF ZTF19aakagbo Unknown16.88 r16.882018-03-302026-09-26110.93148.7577, 15.6946
ZTF ZTF19aakecjs Unknown18.46 r18.462018-02-252026-09-26111.00148.1297, 15.3322
ZTF ZTF19adgatas Unknown17.47 r17.472019-01-302026-09-26110.98145.4093, 15.2761
ZTF ZTF19adgcidm Unknown18.14 r18.142019-01-302026-09-26110.96144.0590, 15.2281
ZTF ZTF23aaabnbj Unknown18.03 r18.032023-01-072026-09-26110.93143.7148, 17.6745
ZTF ZTF26abxsybu Solar System MPC17.86 r17.862026-09-262026-09-26111.00142.1307, 20.9651
ZTF ZTF26abxsydm Solar System MPC14.78 r14.782026-09-262026-09-26111.00143.9589, 16.3088
ZTF ZTF26abxsygm Solar System MPC17.46 r17.462026-09-262026-09-26111.00141.5730, 19.9679
ZTF ZTF26abxsyig Solar System MPC16.95 r16.952026-09-262026-09-26111.00144.4556, 19.7528
ZTF ZTF26abxsyje Solar System MPC17.72 r17.722026-09-262026-09-26111.00142.8251, 19.7509
ZTF ZTF26abxsykl Solar System MPC13.72 r13.722026-09-262026-09-26111.00143.6184, 17.5563
ZTF ZTF26abxsylo Solar System MPC18.03 r18.032026-09-262026-09-26111.00141.5907, 19.0576
ZTF ZTF26abxsymt Unknown17.78 r17.782026-09-262026-09-26111.00141.8330, 15.2574
ZTF ZTF26abxsynd Solar System MPC17.86 r17.862026-09-262026-09-26111.00144.3510, 22.2665
ZTF ZTF26abxsynn Solar System MPC17.75 r17.752026-09-262026-09-26111.00143.6930, 15.9281
ZTF ZTF26abxsyny Solar System MPC17.76 r17.762026-09-262026-09-26111.00142.1298, 16.2237
ZTF ZTF26abxsynz Solar System MPC17.70 r17.702026-09-262026-09-26111.00147.1815, 16.3602
ZTF ZTF26abxsyop Solar System MPC17.28 r17.282026-09-262026-09-26110.99143.5807, 20.6388
ZTF ZTF26abxsyoq Solar System MPC18.25 r18.252026-09-262026-09-26110.89143.1899, 20.2195
ZTF ZTF26abxsyor Solar System MPC18.41 r18.412026-09-262026-09-26111.00143.2332, 20.2047
ZTF ZTF26abxsyot Solar System MPC17.39 r17.392026-09-262026-09-26111.00143.6984, 21.0449
ZTF ZTF26abxsyrb Solar System MPC14.71 r14.712026-09-262026-09-26111.00142.9311, 17.7250
ZTF ZTF26abxsyrc Solar System MPC18.06 r18.062026-09-262026-09-26111.00142.5654, 17.5860
ZTF ZTF26abxsyrd Solar System MPC17.77 r17.772026-09-262026-09-26111.00148.6732, 17.4400
ZTF ZTF26abxsyyd Solar System MPC16.11 r16.112026-09-252026-09-26111.00146.6416, 15.4231
ZTF ZTF17aacldnv EclBin17.46 r17.242017-12-072026-09-2620231.00153.8973, 33.9937
ZTF ZTF17aaclnqv RRLyrae17.89 r16.452017-10-192026-09-2628361.00157.0852, 30.1372
ZTF ZTF17aacmhmm RRLyrae18.29 r16.872017-10-192026-09-2614201.00156.0039, 31.6234
ZTF ZTF18aacgehv Seyfert1AT 2021kqh18.30 r18.252017-11-192026-09-2616261.00152.9589, 34.6324
ZTF ZTF18aaegcfp QSO18.63 r18.632018-05-102026-09-2631461.00154.3509, 33.5676
ZTF ZTF18acbwaow Seyfert118.35 r18.352018-03-252026-09-265101.00159.9745, 29.6466
ZTF ZTF18acybidp Unknown18.15 r18.152018-12-172026-09-26110.90155.5899, 32.5852
ZTF ZTF26abxsxwq Solar System MPC14.60 r14.602026-09-262026-09-26111.00159.7989, 29.9767
ZTF ZTF17aabtpnp RRLyrae16.55 r15.532017-12-182026-09-2658901.00148.6710, 9.2318
ZTF ZTF17aabtprg RRLyrae17.42 r16.222017-12-182026-09-2666931.00149.5471, 14.7566
ZTF ZTF18aaadfcd EclBin15.92 r15.402017-12-142026-09-2622291.00150.0117, 9.2390
ZTF ZTF18aaadfdp RRLyrae16.60 r16.222017-12-182026-09-2643591.00148.0221, 9.9759
ZTF ZTF18aabkfjg EclBin16.09 r15.542018-01-112026-09-2643531.00151.5370, 8.5762
ZTF ZTF18aarbggk QSO17.77 r17.772018-05-072026-09-26851481.00149.7158, 12.6321
ZTF ZTF18aawntnh Unknown16.16 r16.162019-01-082026-09-26110.84150.2475, 13.2859
ZTF ZTF18aawnttm Unknown18.30 r18.302019-01-082026-09-26110.97150.1548, 12.8494
ZTF ZTF23aaablob Unknown17.71 r17.712021-03-232026-09-26110.86147.9508, 10.1697
ZTF ZTF23abvofpd Unknown14.96 r13.832023-12-272026-09-26220.99149.4880, 10.3446
ZTF ZTF26abxsxou Solar System MPC17.71 r17.712026-09-262026-09-26111.00147.7132, 14.0395
ZTF ZTF26abxsxwv Solar System MPC18.29 r18.292026-09-262026-09-26111.00149.7654, 12.3680
ZTF ZTF26abxsyet Solar System MPC16.02 r16.022026-09-262026-09-26111.00152.1465, 10.7533