Possible nova in Lup needs spectroscopic confirmation asap

[weo]

ASASSN-25cm = AT 2025nlr is a possible nova in Lupus that was discovered through the ASAS-SN program on 2025 June 12.8700 UT at Sloan g magnitude 8.7.

Visual observations by L. Herrington (Ketchum, OK) show the object at magnitude 7.9 on June 13.9764 UT and 7.8 +/-0.05 on June 14.2431 UT.

Spectroscopic confirmation is needed.

Coordinates (2000): RA 15 08 03.27 Dec -40 08 29.6
Finder charts with comparison stars may be created using the AAVSO Variable Star Plotter (VSP; Variable Star Plotter).

Please report your observations to the AAVSO Spectroscopic Database (AVSpec, spectroscopy; AVSpec Submit) or to the AAVSO International Database AID, photometry; American Association of Variable Star Observers).

Good observing,
Elizabeth Waagen, AAVSO HQ

[kasism]

data collected 17th/18th UT on 462 LUP, shows increase in blue end in 24hr period. Taken at AM 2.54 as it was ~15 deg above horizon. Last night took it pre-meridian on the 17th post meridian. Same ref star - HD129685 both nights taken before the target. Perhaps I just got better results 18th as on 17th it was descending instead of ascending as on 18th. But same instrument, same ref star same analysis both nights.