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
101–150 of 255,900 · All objects seen in the 7 nights
ObjectClassLast magPeakFirst seenLast seenNightsAlertsRel.RA, DecPartner
ZTF ZTF26abxsyin Solar System MPC17.47 r17.472026-09-262026-09-26110.99141.5800, 12.8924
ZTF ZTF26abxsyip Solar System MPC17.80 r17.802026-09-262026-09-26111.00141.4843, 12.9142
ZTF ZTF26abxsyir Solar System MPC17.70 r17.702026-09-262026-09-26111.00146.5001, 11.1881
ZTF ZTF26abxsyjk Solar System MPC17.02 r17.022026-09-262026-09-26111.00142.8005, 14.0790
ZTF ZTF26abxsykx Solar System MPC18.36 r18.362026-09-262026-09-26111.00139.8441, 11.4733
ZTF ZTF26abxsylc Solar System candidate15.55 r15.552026-09-262026-09-26111.00141.5129, 9.3165
ZTF ZTF26abxsylg Solar System candidate15.64 r15.642026-09-262026-09-26111.00141.4946, 9.3195
ZTF ZTF26abxsyli Unknown15.64 r15.642026-09-262026-09-26111.00141.5858, 9.3041
ZTF ZTF26abxsymr Solar System MPC14.61 r14.612026-09-262026-09-26111.00141.3490, 15.0719
ZTF ZTF26abxsync Solar System MPC17.19 r17.192026-09-262026-09-26111.00139.4537, 10.1195
ZTF ZTF26abxsypc Solar System MPC15.44 r15.442026-09-262026-09-26111.00145.6889, 9.5983
ZTF ZTF26abxsyqc Solar System MPC17.40 r17.402026-09-262026-09-26111.00141.0546, 14.0054
ZTF ZTF26abxsyqp Solar System MPC15.23 r15.232026-09-262026-09-26111.00144.5503, 8.2701
ZTF ZTF26abxsyrt Solar System MPC16.45 r16.452026-09-262026-09-26111.00139.6521, 9.3717
ZTF ZTF26abxsytq Solar System MPC16.44 r16.442026-09-262026-09-26111.00139.5421, 14.3477
ZTF ZTF26abxsyts Solar System MPC18.39 r18.392026-09-262026-09-26111.00139.5116, 13.9739
ZTF ZTF26abxsytt Solar System MPC18.47 r18.472026-09-262026-09-26111.00140.0232, 14.2864
ZTF ZTF26abxsyui Unknown17.38 r17.382017-12-172026-09-26111.00142.5225, 13.1564
ZTF ZTF26abxsyul Unknown18.08 r18.082017-12-172026-09-26110.94142.6469, 13.0567
ZTF ZTF26abxsyxo Solar System MPC17.03 r17.032026-09-262026-09-26111.00146.6458, 10.4021
ZTF ZTF26abxsyxp Solar System MPC17.15 r17.152026-09-262026-09-26111.00146.2050, 10.4822
ZTF ZTF17aaagvoz LongPeriodV*14.07 r13.892017-12-142026-09-2645561.00145.6284, 16.6004
ZTF ZTF17aaagvzh RRLyrae15.88 r15.462017-12-142026-09-2653861.00141.9108, 18.7525
ZTF ZTF17aaagxnf Star17.19 r17.112017-12-142026-09-2629421.00142.5995, 19.5991
ZTF ZTF17aaaizxf RRLyrae14.84 r14.072017-12-142026-09-2640571.00141.3209, 18.6320
ZTF ZTF17aaajacm Mira15.96 r13.202017-12-142026-09-2638591.00142.9630, 17.2515
ZTF ZTF17aaantlz RRLyrae17.41 r16.792017-12-152026-09-2633511.00142.6602, 17.9051
ZTF ZTF17aaayzfl Unknown16.03 r16.032017-12-172026-09-26110.39146.4685, 15.2244
ZTF ZTF17aabhdun RRLyrae16.20 r14.902017-12-142026-09-2637521.00142.7375, 15.9538
ZTF ZTF18aaahdkq RRLyrae18.55 r17.802017-12-142026-09-2659961.00146.6507, 15.9997
ZTF ZTF18aaahepa RRLyrae16.41 r15.942017-12-142026-09-26631131.00148.4373, 17.9000
ZTF ZTF18aaatuhb RRLyrae16.83 r15.612018-01-132026-09-26631091.00147.2387, 17.5283
ZTF ZTF18aabjqbe Unknown17.52 r17.522018-01-132026-09-26110.89145.9477, 15.2739
ZTF ZTF18aabkekf Unknown16.93 r16.932018-01-132026-09-26220.98146.7386, 15.3181
ZTF ZTF18aabktuh Unknown17.97 r17.972018-01-132026-09-26110.96147.7756, 15.3328
ZTF ZTF18aabsowm RRLyrae16.78 r16.042018-02-242026-09-2654841.00147.5313, 16.5761
ZTF ZTF18aahewru EclBin16.09 r15.802018-02-072026-09-2629421.00147.3450, 16.3248
ZTF ZTF18aahexel Unknown18.41 r18.412018-04-062026-09-26110.70148.0640, 17.1934
ZTF ZTF18aajfika Unknown17.95 r17.952017-12-172026-09-26110.95144.7179, 15.9744
ZTF ZTF18aakanqo Unknown16.65 r16.652018-02-242026-09-26330.96145.6661, 18.7088
ZTF ZTF18aasrydv RSCVnV*15.56 r15.562018-02-242026-09-2644831.00148.3153, 15.4487
ZTF ZTF18aawmtox Unknown15.46 r15.462017-12-142026-09-26110.90148.3436, 15.4772
ZTF ZTF18accnmoe QSO18.24 r17.932018-03-302026-09-26861621.00144.2423, 19.4991
ZTF ZTF18accnmxe Seyfert118.30 r18.182018-05-242026-09-2610121.00142.6434, 20.7379
ZTF ZTF18acefhsf QSO18.38 r18.102018-05-242026-09-2615161.00143.5457, 18.1116
ZTF ZTF18acicxgi Unknown16.21 r16.212018-11-122026-09-26110.95148.2925, 15.3232
ZTF ZTF18acidebd Unknown15.71 r15.712018-11-122026-09-26110.91146.2616, 15.5996
ZTF ZTF18acvgglb QSO18.32 r18.322018-11-032026-09-268121.00143.7962, 21.0533
ZTF ZTF18adazxqq Unknown15.85 r15.392018-11-032026-09-2628360.99146.2240, 17.4638
ZTF ZTF19aadrdoj Unknown16.11 r16.112019-01-202026-09-26110.39145.8062, 15.8957