This is a Fe II nova which is a classical nova that displays prominent 1 time ionized iron (Fe+ in physics and chemistry) and hydrogen emission lines. Representing about 85% of all observed novae.

In astrophysics we like to be ahead in notation ( Fe II instead of Fe+ ), but at the end of the day "Physics is everything" ref. Don Lincoln

AT2026rdg (= ZTF26abemjfk) discovered 2026/07/01.305 at R.A. = 19h14m31s.366, Decl. = +12°03'53".60 Mag 12.5:7/1, Type Fe II (References: ATEL 17867, ATEL 17868, ATEL 17817, TNS, ZTF observations)

Time: 23:20UT 2026-07-05 Exp. 75 x 15 Sec
Tel: Meade 4" SC @ f/5 ZWO ASI662MC Color Camera @ +20°C 2.3"/pix Paramount GT-1100S
Odd Trondal, My lucky Obs.code 238 (Uranium). Oslo Norway.

Plutonium Isotope.Atom-weight 238.Half-life 87.7 years gives power to the Voyagers, New Horizon and other distant spacecrafts.

Reference David Bishop http://www.rochesterastronomy.org/snimages/

Discovery page (References: TNS):
https://www.wis-tns.org/object/2026rdg