The Astronomer’s Telegram is a system for reporting and commenting on new astronomical observations. The latest reports are listed here.

ATel 17905: Photometric observations of Gaia16adj/ASASSN-14eg in superoutburst

17 Jul 2026 at 7:14pm
We identified Gaia16adj/ASASSN-14eg/AT2016dre as a promising candidate SU UMa-type dwarf nova during our analysis of cataclysmic variables selected for long-term monitoring. ... Read more...

ATel 17902: Spectroscopic Classification of Astrophysical Transients with the...

16 Jul 2026 at 10:30pm
We report the classifications of astrophysical transients from spectroscopic observations with the Kast spectrograph on the Shane telescope obtained on 2026 July 16 UT. ... Read more...

ATel 17900: Evolution of Nova Aql 2026 (V2104 Aql) from discovery to the t2 p...

16 Jul 2026 at 3:02pm
The transient AT 2026rdg (discovered via ZTF by M. Ning and H. Lin at g = 14.45 mag on July 1.305 UT) was classified in ATel #17867 and #17868 as a highly reddened FeII-type nova, which was consequently designated as Nova Aql 2026 = V2104 Aql in CBET #5711. ... Read more...

ATel 17896: SN 2026sqf: upper limits from an IceCube neutrino search

15 Jul 2026 at 9:26pm
The IceCube Collaboration (http://icecube.wisc.edu/) reports: IceCube has performed a search for track-like muon neutrino events arriving from the direction of SN 2026sqf following the report from BHTOM (AstroNote: https://www.wis-tns.org/astronotes/astronote/2026-214), in a time range of six d... Read more...

ATel 17894: Spectroscopic Classification of AT2026rwn with the Lick Shane Tel...

15 Jul 2026 at 8:16pm
We report the classification of the astrophysical transient 2026rwn from spectroscopic observations with the Kast spectrograph on the Shane telescope obtained on 2026 July 07 UT. ... Read more...

ATel 17889: Detection of superhumps during the superoutburst of Gaia19ati/ASA...

13 Jul 2026 at 5:01pm
We report the results of photometric observations of Gaia19ati/ASASSN-15pa carried out on 2026 July 11 with the 40-cm f/6.8 ODK telescope at Franz-Josef Hambsch's Remote Observatory Atacama Desert (ROAD) in Chile. ... Read more...

ATel 17888: Radio Detection of SN 2001ig in NGC 7424 with uGMRT Band 4 at 650...

13 Jul 2026 at 4:31pm
We report a radio detection of the Type IIb supernova SN 2001ig in the nearby galaxy NGC 7424, at a distance of 10.8 Mpc (Soria et al. 2024), with the upgraded Giant Metrewave Radio Telescope (uGMRT). ... Read more...

ATel 17887: Spectroscopic confirmation of TCP J02191736+2857158 as a WZ Sge-t...

12 Jul 2026 at 7:38pm
We report on the spectral features seen in the transient TCP J02191736+2857158. We obtained the spectrum by using a fiber-fed integral field spectrograph (KOOLS-IFU; Matsubayashi et al. ... Read more...

ATel 17886: AT2026stb is a Galactic nova in Scutum

12 Jul 2026 at 3:10pm
We report optical spectroscopy with the SOAR 4.1m telescope confirming that AT2026stb is a Galactic nova. AT2026stb was discovered by ZTF is located at RA=18:31:15.618, Dec=-05:34:31.92 (Galactic latitude b=+1.9) on 2026 July 8 at g = 17.1, r =15.1mag, and was flagged by DCAP as a nova candidate ... Read more...

ATel 17878: ASASSN-26dt: an SMC Nova with a Luminous Progenitor and CSM

6 Jul 2026 at 2:10pm
We highlight a new nova in the Small Magellanic Cloud discovered with ASAS-SN: ASASSN-26dt, also known as AT2026oyp. The source is located at a J2000 position, RA=00:50:45.142, Dec= -71:38:36.96. ... Read more...


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