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
151–180 of 180 · TNS-classified objects seen in the 7 nights
ObjectClassLast magPeakFirst seenLast seenNightsAlertsRel.RA, DecPartner
ZTF ZTF26aazwerk UnknownSN II19.80 r18.892026-06-042026-09-2253811.000.9373, 8.4790
ZTF ZTF18acetlrs SupernovaSN IInfaded r18.892018-07-082026-09-2251651.00342.3667, -24.3836
ZTF ZTF26abpqbtv AmbiguousSN Ia18.22 r17.352026-08-192026-09-2215251.00336.3977, -27.8762
ZTF ZTF26abjoowq AmbiguousSN Ia19.33 r17.662026-07-242026-09-2231501.00353.6325, -13.5968
ZTF ZTF18accpubd SupernovaSN Iafaded r19.702017-12-142026-09-22741021.00342.7613, -3.6494
ZTF ZTF18acetygb SupernovaSN Iafaded r19.592017-12-142026-09-2249521.00339.8879, -2.7614
ZTF ZTF26abctnjz BlueCompactGImpostor-SN19.85 r19.852026-05-142026-09-2211111.00337.6533, -0.1102Rubin
ZTF ZTF18absgnbm SupernovaSN IIfaded r19.032018-06-302026-09-2228301.00351.3174, 13.9340
ZTF ZTF26abpanks SN candidateSN Ibn19.84 r18.102026-08-162026-09-2218261.00352.7984, -10.1786
ZTF ZTF26abmiytv AmbiguousSN Ia19.20 r18.362026-08-072026-09-2231521.00335.6124, -2.8868
ZTF ZTF18abmstte SupernovaSN Iafaded g19.062018-03-272026-09-221252031.00254.8196, 1.3677
ZTF ZTF18abokhip UnknownCV19.45 r18.602018-05-042026-09-2230501.00298.6874, 10.0653
ZTF ZTF26abnhuvz AmbiguousSN II19.47 r18.942026-08-112026-09-2219311.00263.3233, 3.4772
ZTF ZTF18acvvtis UnknownSN Ia-91T-likefaded r18.012018-11-042026-09-21721261.00118.2591, 7.2764
ZTF ZTF19acbhvgi SupernovaSN IIPfaded r18.922018-11-052026-09-217151.00117.3169, 9.1925
ZTF ZTF19aceqlxc SupernovaSN IInfaded r18.502018-11-052026-09-217181.00117.4197, 5.0742
ZTF ZTF18aauhdvo SupernovaSN IIfaded r19.422018-03-072026-09-2110101.00124.7826, 44.9456
ZTF ZTF26abujqpn UnknownSN Ia17.90 r17.902026-09-132026-09-21111.00124.4289, 47.3172
ZTF ZTF18aaawtyh CataclyV*_CandidateCVfaded r18.482018-02-092026-09-2153681.00114.7379, 18.4468
ZTF ZTF18abvdmfx UnknownSN IIfaded g17.002018-08-132026-09-2125441.0022.6133, -26.7850
ZTF ZTF18abnygkb SupernovaSN Iafaded r19.492018-07-172026-09-2111111.00328.5000, 8.1147
ZTF ZTF26abqighe Microlensing candidateSN Ia20.14 r19.362022-07-182026-09-2018231.0019.5968, 13.3799
ZTF ZTF18abtxvhy SupernovaSN Iafaded r20.162018-08-152026-09-2010111.00344.8033, 0.4050
ZTF ZTF18acxhody UnknownCV19.42 r15.642018-07-242026-09-2018321.00334.1152, -20.4571Rubin
ZTF ZTF26abgeqzt SN candidateSN Ib19.81 r18.882026-07-102026-09-2013131.00342.4449, -26.4035
ZTF ZTF26aaupgtw UnknownSN Ia20.16 g16.252026-04-292026-09-20922151.00333.6695, 5.0808
ZTF ZTF18acbxjaa UnknownSN Iafaded g18.872018-07-212026-09-2039501.00344.5477, -20.2843
ZTF ZTF26abjdply AmbiguousSN II19.53 g18.782026-07-222026-09-2028471.00328.5533, -20.1694
ZTF ZTF23aafqznb Microlensing candidateSN Ia18.82 r18.052022-09-182026-09-2028441.00302.5376, -5.4259
ZTF ZTF26abohnal AmbiguousSN Ia19.98 r18.892026-08-152026-09-2025371.00324.1660, 0.1146