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

ATel 18029: Spectroscopic classification of AT 2026aabo as a bright nova in M31

3 Sep 2026 at 7:45am
We report the spectroscopic classification of AT 2026aabo as a very bright and slowly evolving nova in M31. This transient was first discovered on 2026-08-29T09:28:57 by ZTF Collaboration and reported on TNS at 18.57 mags in the ZTF-g band. ... Read more...

ATel 18028: NuSTAR detection of shock-powered X-rays from Nova Sagittae 2026 ...

2 Sep 2026 at 7:29pm
Nova Sagittae 2026 (V488 Sge, PNV J19450648+1822422) was discovered on its rise to optical peak by the NMW-TexasTech survey at 2026-08-25.1278 UTC having an unfiltered magnitude 9.0 (CBET #5729, ATel #18008, #18009, #18012, #18014, #18021, #18022). ... Read more...

ATel 18027: AT 2026aabo (ZTF26abramlb, ATLAS26kqn): a bright nova candidate i...

2 Sep 2026 at 11:55am
We report ATLAS forced photometry of the bright nova candidate AT 2026aabo (ZTF26abramlb, ATLAS26kqn). This transient was discovered by Anirudh Salgundi on behalf of ZTF (TNS Astronomical Transient Report No. ... Read more...

ATel 18025: XMM-Newton detection of a high flux state in the HMXRB IGR J13020...

1 Sep 2026 at 10:23am
We report the detection of X-ray brightening from the source IGR J13020-6359 with the XMM-Newton X-ray telescope in the energy range 0.2-12.0 keV. On 7th August 2026 IGR J13020-6359 was observed in the field of view of an XMM-Newton observation, and the long-term variability was assessed using t... Read more...

ATel 18022: Follow-up spectroscopic observations of Nova Sge 2026 (V488 Sge) ...

31 Aug 2026 at 12:02pm
Nova Sge 2026 (V488 Sge) was discovered by the NMW-TexasTech survey on 2026-08-25.12 UT (ATel #18009). Follow-up spectroscopic observations were conducted, as reported in ATel #18008 and ATel #18012, confirming it as a Fe II-type nova. ... Read more...

ATel 18021: The Fast Nova Sge 2026 (V0488 Sge) from photospheric to nebular r...

30 Aug 2026 at 3:22pm
The Nova appeared in Sagitta on August 25.12 UT has been already presented in ATel#18008, ATel#18009, ATel#18012, and ATel#18014. We observed the Nova at the 122 cm Galileo telescope of Asiago during the third Summer Asiago School for Young Astronomers with Galileo Observations (ASYAGO) of 24-29... Read more...

ATel 18014: Spectroscopic observations of Nova Sge 2026 (PNV J19450648+1822422)

27 Aug 2026 at 4:02pm
I report optical spectroscopic observations of the newly discovered nova Nova Sge 2026 (ATel #18009), located at RA (J2000) = 19h 45m 06.48s, Dec (J2000) = +18 & deg; 22 & prime; 42.2 & Prime;. ... Read more...

ATel 18012: Spectroscopic Classification of PNV J19450648+1822422 as an Fe II...

26 Aug 2026 at 2:28pm
The NMW-TexasTech survey (Rokinon 135-mm f/2.2 telephoto lens + QHY600PH-M CMOS camera) discovered an optical transient of 9.0 mag in Sagitta on 2026 Aug 25.1278 UTC, and reported it to the CBAT Transient Objects Confirmation Page, where it was designated PNV J19450648+1822422 http://www.cbat.eps... Read more...

ATel 18009: Discovery and follow up observations of the likely Galactic Nova ...

25 Aug 2026 at 6:04pm
We report the discovery of the likely Galactic nova NMW-TTU-26bp (PNV J19450648+1822422). The transient was discovered by the NMW-TexasTech survey on 2026-08-25.12 UTC at an unfiltered magnitude of 9.0. ... Read more...

ATel 18008: Spectroscopic Observation of PNV J19450648+1822422: Likely a Clas...

25 Aug 2026 at 11:52am
We report the spectroscopic observation of PNV J19450648+1822422. We obtained its spectrum on 2026-08-25.431 UT with the fiber-fed integral field spectrograph (KOOLS-IFU; Matsubayashi et al. ... Read more...


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