AstroNotes

We report rapid fading in the light curve of AT2026naq/ZTF26aaxgdqa through combined ZTF and ATLAS survey data. The transient shows a fade of 0.5 mag/day from a peak absolute g-band magnitude of -15…

We report 2 SLSN candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these events.

We report the Pan-STARRS and ATLAS combined discoveries of the transient AT2026ngb in the 70Mpc galaxy NGC 4924, rapidly rising within 1hr of Pan-STARRS observations. The transient was detected in th…

We report spectroscopic observations of 3 transients as Type Ia supernovae.

This report includes one Type II supernova and four Type Ia supernovae.

Here we report the ATLAS discovery of the transient ATLAS26fzv (AT2026nad) in galaxy 2MASX J00310141-1338520 at magnitude m_c = 15.72 +/- 0.02. At a distance of 54 Mpc, the transient was discovered o…

Here we report the ATLAS discovery of the transient ATLAS26fxq (AT2026myp) in galaxy IC 5191 at magnitude m_o = 18.82 +/- 0.11. At a distance of 95 Mpc, the transient was discovered on MJD = 61175.55…

This report includes classifications of 5 Type Ia, 1 Type Ia-91bg-like, 2 Type II, 1 Type IIn-pec and 1 SN. We encourage followup observations.

Here we report the ATLAS discovery of the transient ATLAS26fuo (AT2026mxl) in galaxy ESO 575- G013 at magnitude m_o = 19.30 +/- 0.08. At a distance of 101 Mpc, the transient was discovered on MJD = 6…

We report on the optical multiband photometric follow-up of SN 2026fov (Type II SN) and AT 2026fbz (Nova) conducted with the BHTOM.space Global Telescope Network.

Using SDSS-V spectroscopy, including in the new rapid follow-up Target-of-Opportunity (ToO) mode, we classify the transient AT 2025alls as an AGN undergoing significant, unusual brightening. The sour…

This report includes classifications of 5 Type Ia, 1 Type II, 1 Type IIn, and 1 TDE-H-He. We encourage followup observations.

This report includes classifications of 1 Type Ia,1 Type II, 1 Type Ia-91T-like, 1 AGN and 3 CV's. We encourage followup observations.

This report includes classifications of 4 Type Ia's, 1 Type II, 1 Type Ia-91bg-like, and confirmation of a previous classification for a Type Ic. We encourage followup observations.

We report on the optical multiband photometric follow-up of SN 2026fvx conducted with the BHTOM.space Global Telescope Network.

We present (SDSS) g&r filter (DAO) and (Kron-Cousins - V & R) photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion Astrophys…

We report the spectroscopic classifications of 3 transients (2 SNe Ia, 1 SN Ic-BL) discovered by LSST.

Here we report the ATLAS discovery of the transient ATLAS26flx (AT2026mho) in galaxy ESO 595- G 014 at magnitude m_o = 17.93 +/- 0.16. At a distance of 35 Mpc (redshift independent, from NED), the tr…

We report on the optical photometric follow-up of SN 2026kie with RAPAS, a ProAm network using telescopes equipped with a set of filters RAPAS G, RAPAS Gbp and RAPAS Grp meeting Gaia G, Gbp and Grp p…

We report on the optical multiband photometric follow-up of 2026coj, 2025wyg, 2019uix, 2024sfn, 2024aboo, 2024abwu and 2025ahn conducted with the BHTOM.space Global Telescope Network.

We report the spectroscopic classification of 7 transients obtained with the Nordic Optical Telescope as part of the Observational Astrophysics II course at Stockholm University.

We announce an update to the NASA/IPAC Extragalactic Database Local Volume sample (NED-LVS). The April 2026 version of NED-LVS has the same composition as that of the June 2025 version, but now has g…

This report includes classifications of 2 Type Ia's and i Type Ia-Ca-rich. We encourage followup observations.

We report the re-classification of SN 2026kie (ATLAS26epm/ZTF26aatzrft/GOTO26dqt) as Type Ic, based on a spectrum acquired with the 3.58m ESO New Technology Telescope. Our high S/N spectrum lacks any…

This report includes 1 Type IIn, 1 Type Ic-BL, 1 Type Ia and a 1 blue featureless SN.

Here we report the ATLAS discovery of the transient ATLAS26fdh (AT2026ljt) in galaxy UGC 07085A NED01 at magnitude m_o = 18.38 +/- 0.15. At a distance of 99 Mpc, the transient was discovered on MJD …

This report includes classifications of 15 Type Ia's, 1 Type IIb, 1 Type Ic, 2 Type II and 1 SLSN. We encourage followup observations.

We report on the optical multiband photometric follow-up of TDE 2025aarm and TDE 2025bri conducted with the BHTOM.space Global Telescope Network.

This report includes classifications of 11 Type Ia's, 1 Type IIb, 1 Type Ic, 1 Type IIn and 1 unclear SN. We encourage followup observations.

This report includes classifications of 6 Type Ia's, 1 Type II and 1 SLSN-II. We encourage followup observations.

Here we report the ATLAS discovery of the transient ATLAS26exf (AT2026kux) in galaxy UGC 12040 at magnitude m_w = 18.42 +/- 0.07. At a distance of 87 Mpc, the transient was discovered on MJD = 61154…

We report on the optical multiband photometric follow-up of SN 2026afe, SN 2025zjx, SN 2025mb, SN 2026bti, SN 2025aarn, and SN 2025aox, conducted with the BHTOM.space Global Telescope Network.

We present (SDSS) g&r filter (DAO) and (Kron-Cousins - V & R) photometric follow up observations of selected optical transients obtained using the 1.82-m Plaskett telescope of the (Dominion Astrophys…

We report spectroscopic observations of the low luminosity transient AT 2026kqq in NGC 4532, consistent with an LBV eruption or supernova precursor event.

We report Keck/LRIS optical spectroscopic follow-up observations of a red transient identified jointly by the PanSTARRS and LSST surveys as a low luminosity Type IIp supernova.

We report on MMT, NOT, and LT follow-up of the young, nearby SNe 2026kid (D=16.5 Mpc) and 2026kie (D=20.3 Mpc). We classify SN 2026kid as a reddened Type II supernova exhibiting features characterist…

We report 3 SLSN candidates from the ZTF public alert stream, identified by the NEEDLE classifier running on the Lasair alert broker. We encourage spectroscopic classification of these events.

We report the classification of the optical transient ZTF26aaqodeo / AT2026irt as a tidal disruption event (TDE). The source was selected by the tdescore ML classifier (Stein+2024, doi: 10.3847/2041-…

Here we report the ATLAS discovery of the transient ATLAS26epm (AT2026kie) in galaxy NGC 3437 at magnitude m_o = 18.09 +/- 0.10. At a distance of 24 Mpc, the transient was discovered on MJD = 61152.3…

Here we report the discovery of the hostless transient AT2026kfw (LSST-AP-DO-170257199649521669) with brightness m_i = 22.15 +/- 0.10 on MJD = 61151.03. Rubin forced photometry shows a prominent blue…

We present the first prototype of the Lasair Virtual Research Assistant (r0b.a1), a publicly available annotator on the Lasair Rubin Data broker which has been annotating the alert stream since the f…

We report on the optical multiband photometric follow-up of SN 2026ayt conducted with the BHTOM.space Global Telescope Network.

We report on the optical multiband photometric follow-up of SN2026dix conducted with the BHTOM.space Global Telescope Network.

We report on the optical photometric follow-up of SN 2026fvx with RAPAS, a ProAm network using telescopes equipped with a set of filters RAPAS G, RAPAS Gbp and RAPAS Grp meeting Gaia G, Gbp and Grp p…

Here we report the ATLAS discovery of the transient ATLAS26emb (AT2026kbs) in galaxy ESO 064- G 007 at magnitude m_o = 18.76 +/- 0.18. At a distance of 84 Mpc, the transient was discovered on MJD = …

We report gri-band photometry of SN 2026fvx obtained with the Stone Edge Observatory 0.5m telescope on 2026 April 6 and April 8 (UT).

We report the follow-up X-ray observation of TDE AT 2025aarm.

We announce the public release of SNID-SAGE, a framework for supernova spectral classification and analysis that builds on the original SNID methodology. It retains the cross-correlation approach whi…