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.
  • Tonight: a planner for your telescope. Pick your site and telescope, and it lists the supernovae, novae and new objects seen this week that are above your horizon while it is dark and bright enough to see, sorted by when each is best placed, with finder charts, a CSV export and a printable list.

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. An object marked faded was last seen fainter than in the survey's reference image, so it has no brightness of its own and counts only under any mag.
  • History (2+ nights, …): only objects seen on several nights, which filters out one-off artifacts.

Observing from your site

  • Your site: an observatory from the list, or your latitude and longitude (typed, or Use my location). A position is rounded to half a degree, and the site is remembered in this browser only.
  • Object panel: when the object is up tonight, its altitude through the night with the moon, the next 60 nights, and a Finder chart with a link to AAVSO's comparison stars.
  • Objects: Visible from… keeps what is above your limit in tonight's dark window, with when and how high.
  • Sky: Observer… shades what is below your horizon at a time you pick; the counts do not change.

Dark means the sun more than 12° below the horizon (18° if you choose). Positions ignore refraction and precession, a few tenths of a degree: enough to plan, not to point.

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
901–950 of 255,900 · All objects seen in the 7 nights
ObjectClassLast magPeakFirst seenLast seenNightsAlertsRel.RA, DecPartner
ZTF ZTF26abxsvip Solar System MPC18.52 r18.522026-09-262026-09-26111.00144.6772, 16.5533
ZTF ZTF26abxsvjp Solar System MPC19.01 r19.012026-09-262026-09-26111.00142.4987, 20.6680
ZTF ZTF26abxsvkr Solar System MPC18.78 r18.782026-09-262026-09-26110.98147.6829, 15.6315
ZTF ZTF26abxsvks Solar System MPC18.90 r18.902026-09-262026-09-26111.00147.4308, 15.4583
ZTF ZTF26abxsvnb Solar System MPC17.69 r17.692026-09-262026-09-26111.00144.3476, 22.2671
ZTF ZTF26abxsvne Solar System MPC18.57 r18.572026-09-262026-09-26111.00144.1255, 21.9515
ZTF ZTF26abxsvnk Solar System MPC17.73 r17.732026-09-262026-09-26111.00147.1767, 16.3617
ZTF ZTF26abxsvnl Solar System MPC18.57 r18.572026-09-262026-09-26111.00147.2757, 16.8274
ZTF ZTF26abxsvoq Solar System MPC16.08 r16.082026-09-262026-09-26111.00146.6385, 15.4242
ZTF ZTF26abxsvor Solar System MPC18.78 r18.782026-09-262026-09-26111.00146.4904, 15.8090
ZTF ZTF26abxsvpa Solar System MPC16.83 r16.832026-09-262026-09-26111.00144.4518, 19.7537
ZTF ZTF26abxsvpc Solar System MPC13.51 r13.512026-09-262026-09-26111.00143.7864, 16.0934
ZTF ZTF26abxsvpd Solar System MPC14.76 r14.762026-09-262026-09-26111.00143.9545, 16.3096
ZTF ZTF26abxsvpg Solar System MPC17.79 r17.792026-09-262026-09-26111.00143.5620, 16.9147
ZTF ZTF26abxsvrj Solar System MPC17.68 r17.682026-09-262026-09-26111.00143.6885, 15.9294
ZTF ZTF26abxsvrk Solar System MPC18.72 r18.722026-09-262026-09-26111.00143.9810, 15.7872
ZTF ZTF26abxsvst Solar System MPC18.09 r18.092026-09-262026-09-26111.00146.5814, 18.7123
ZTF ZTF26abxsvue Solar System MPC19.04 r19.042026-09-262026-09-26111.00145.6396, 18.3419
ZTF ZTF26abxsvuq Solar System MPC19.08 r19.082026-09-262026-09-26111.00148.7268, 18.1667
ZTF ZTF26abxsvva Solar System MPC18.43 r18.432026-09-262026-09-26111.00141.5351, 22.4954
ZTF ZTF26abxsvvb Solar System MPC18.96 r18.962026-03-192026-09-26111.00141.5869, 21.9900
ZTF ZTF26abxsvwh Solar System MPC16.88 r16.882026-09-262026-09-26111.00145.2228, 17.8216
ZTF ZTF26abxsvwi Solar System MPC18.87 r18.872026-09-262026-09-26111.00141.4376, 21.0008
ZTF ZTF26abxsvwk Solar System MPC17.69 r17.692026-09-262026-09-26111.00142.6274, 16.3368
ZTF ZTF26abxsvwm Solar System MPC18.61 r18.612026-09-262026-09-26111.00142.5569, 16.3434
ZTF ZTF26abxsvwn Solar System MPC19.06 r19.062026-09-262026-09-26111.00142.0492, 21.0009
ZTF ZTF26abxsvwo Solar System MPC17.53 r17.532026-09-262026-09-26111.00141.5681, 19.9691
ZTF ZTF26abxsvwp Solar System MPC18.41 r18.412026-09-262026-09-26111.00142.0264, 20.6096
ZTF ZTF26abxsvwq Solar System MPC18.86 r18.862026-09-262026-09-26111.00141.6058, 20.0185
ZTF ZTF26abxsvwr Solar System MPC18.89 r18.892026-09-262026-09-26111.00142.0666, 20.6889
ZTF ZTF26abxsvww Solar System MPC18.02 r18.022026-09-262026-09-26111.00142.1271, 20.9658
ZTF ZTF26abxsvwx Solar System MPC18.80 r18.802026-09-262026-09-26111.00142.6787, 21.5587
ZTF ZTF26abxsvxg Solar System MPC18.80 r18.802026-09-262026-09-26110.99142.6111, 15.5042
ZTF ZTF26abxswaa Solar System MPC17.55 r17.552025-02-012026-09-26111.00142.1270, 16.2245
ZTF ZTF26abxswaw Solar System MPC17.78 r17.782026-09-262026-09-26111.00148.6701, 17.4412
ZTF ZTF26abxswhw Solar System MPC18.05 r18.052021-05-142026-09-26111.00148.7013, 16.7789
ZTF ZTF26abxswhx Solar System MPC13.35 r13.352019-01-202026-09-26111.00141.7443, 19.0570
ZTF ZTF26abxswhy Solar System MPC18.01 r18.012026-09-262026-09-26111.00141.5856, 19.0590
ZTF ZTF26abxswhz Solar System MPC18.63 r18.632026-09-262026-09-26111.00141.2639, 19.3336
ZTF ZTF26abxswia Solar System MPC19.08 r19.082026-09-262026-09-26111.00141.6588, 19.2080
ZTF ZTF26abxswib Solar System MPC19.04 r19.042026-09-262026-09-26111.00141.7756, 19.3196
ZTF ZTF26abxswod Solar System MPC18.54 r18.542026-09-262026-09-26111.00144.8411, 18.1430
ZTF ZTF26abxswvt Solar System MPC19.24 r19.242026-09-262026-09-26110.98143.4444, 18.7110
ZTF ZTF26abxswzb Solar System MPC18.20 r18.202026-09-262026-09-26111.00144.5318, 17.3411
ZTF ZTF26abxswzm Solar System MPC13.66 r13.662026-09-262026-09-26111.00143.6137, 17.5574
ZTF ZTF26abxswzo Solar System MPC18.78 r18.782026-09-262026-09-26111.00143.2402, 17.1949
ZTF ZTF26abxsxfr Solar System MPC14.65 r14.652026-09-262026-09-26111.00142.9278, 17.7262
ZTF ZTF26abxsxfv Solar System MPC17.82 r17.822021-04-122026-09-26111.00142.5621, 17.5869
ZTF ZTF26abxsxgl Solar System MPC18.69 r18.692026-09-262026-09-26111.00142.7061, 17.3746
ZTF ZTF26abxsxvs Solar System MPC18.23 r18.232026-09-262026-09-26111.00142.4290, 18.0267