# SN 2026aaiv

**URL:** <https://forum.astro-colibri.science/t/sn-2026aaiv/560>\
**Category:** Latest transients\
**Created:** [September 5, 2026, 11:51am UTC](https://forum.astro-colibri.science/t/sn-2026aaiv/560 "2026-09-05T11:51:51Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![roger.hellot.astro](https://avatars.discourse-cdn.com/v4/letter/r/f08c70/32.png) [@roger.hellot.astro](https://forum.astro-colibri.science/u/roger.hellot.astro)\
**Post date:** [September 5, 2026, 11:51am UTC](https://forum.astro-colibri.science/t/sn-2026aaiv/560/1 "2026-09-05T11:51:51Z")

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**20260904 Observation Report of SN 2026aaiv**

 ![MED_Tous les _c-_a MED36xPrismLogPSTxtPt](https://canada1.discourse-cdn.com/flex007/uploads/astro_colibri/original/1X/5863396b2664f9f2620fac3163bb401596ea808f.jpeg)

**From** : Roger Hellot at AITP Observatory, [roger.hellot.astro@gmail.com](mailto:roger.hellot.astro@gmail.com)  
On behalf of RAPAS (Professional Amateur Network for Scientific Alerts)  
We report follow-up observations of SN 2026aaiv discovered at 2026-09-01 11:23:32.352 (JD=2461284.97468) by J. Tony and al., ATLAS.  
We observed the field of R.A. (J2000) = 22h 37mn 05.618s / DEC. (J2000) = +34° 24’ 35.37’’  
with our Planewave-CDK17 telescope at AITP-Observatory (W96) at SPACEOBS San Pedro de Atacama in Chili, equipped with a CMOS QHY268M camera and Sloan filters g-r-i.  
Our observations started at 2026-09-04T01-36-43 during 1.31hr  
We obtained 3 sequences of 12 images exposure time 120s with Sloan-g, Solan-r and Sloan-i filters. After calibration, we made median stacked images and uploaded them to STDWeb, (Karpov, S., 2025; Lechapelain, P.-Y., 2026). The images were calibrated using the reference catalog Pan-STARRS DR1 for Sloan filters and HOTPANTS or ZOGY for galactic subtraction.

 ![Image3](https://canada1.discourse-cdn.com/flex007/uploads/astro_colibri/original/1X/094c0fec932d6f465cf5c526d3207b261c89e883.jpeg)

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**Author:** ![Fabian.Schussler](https://yyz1.discourse-cdn.com/flex007/user_avatar/forum.astro-colibri.science/fabian.schussler/32/25_2.png) [@Fabian.Schussler](https://forum.astro-colibri.science/u/Fabian.Schussler)\
**Post date:** [September 5, 2026, 5:09pm UTC](https://forum.astro-colibri.science/t/sn-2026aaiv/560/2 "2026-09-05T17:09:15Z")

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Certainly an interesting target! Among the [1% closest type Ia supernovae](https://storage.googleapis.com/astro-colibri.appspot.com/supernova/Astro-COLIBRI_SN2026aaiv_SN_Ia_created2026-09-04.png) and within the beautiful NGC 7331 galaxy.

> **[Astro-COLIBRI](https://astro-colibri.com/event:TNS2026aaiv?science_mode=true)**
>
> Enabling real-time multi-messenger astrophysics discoveries