Vend78: a possible young nova in M31

I've just found a ~19.4 C mag possible nova on my 3×120s co-added images of M31 taken tonight (2025 Dec 11.7759 UT) with a Luminance filter using the 0.43 m Dall-Kirkham telescope at the Alnitak Remote Observatory, Sierra del Segura, Spain. Follow-up images obtained this morning (2025 Dec 12.2138 UT) with a 0.61 m f/6.5 CDK reflector at the Sierra Remote Observatory, Auberry, California, USA (iTelescope.net) show that it is still rising, at around 18.3 CV mag.

It has been reported to the TOCP website as PNV J00421476+4117284 and to the TNS server as AT 2025agmm.

Preliminary coordinates of Vend78: 00 42 14.76 +41 17 28.4 (J2000.0)

Vend78 at 2025. dec 12.2138UT on 3x120s co-added images made with a 0.61-m f/6.5 CDK reflector, Sierra Remote Observatory at Auberry California USA (iTelescope.net).


The discovery was made using the Alnitak Remote Observatories robotic telescope network, ARTA program.

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