Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J14242032-0341478

TCP J14242032-0341478   2023 12 07.8535*  14 24 20.32 -03 41 47.8  13.3 U             Vir       9 4

2023 12 07.85350

Discovered by Hideo Nishimura, Kakegawa, Shizuoka, Japan on three frames (25-s exp. limiting mag 15) taken by Canon EOS 6D digital camera + 200-mm F/3.0 lens. On Dec. 07.82527 UT, mag.=14.0. Nothing is visible at this location on the frames taken on 2023 Dec. 03.08021 UT (limiting mag 15) by same instrument. --- Isao Endoh (NAOJ)

2023 12 03.08021

correction : Pre-discovery observation by Hideo Nishimura. On 2023 Dec. 03.08021 UT, mag.=14.0 (30-s exp. limiting mag 15). --- Isao Endoh (NAOJ)

2023 12 03.80208

more correction : Pre-discovery observation by Hideo Nishimura. On 2023 Dec. 03.80208 UT, mag.=14.0 (30-s exp. limiting mag 15). Not 2023 Dec. 03.08021 UT sorry... I confirmed to Nishimura-san. --- Isao Endoh (NAOJ)

2023 12 08.855

Photometry results were B=14.28, V=14.07, Rc=14.13 and Ic 14.62 with 0.28mSCT + QSI 632ws CCD at TAO-Kamagaya. - Seiichiro Kiyota (Kamagaya, Japan)

2023 12 12.547

C. Fremling et al. (ZTF) discovered this TCP on 2023 Dec. 12.547 UT and reported to TNS (Transient Name Server) as PSN (AT 2023zvq). On 2023 Dec. 14 UT, they confirmed that this PSN was a type Ia supernova (SN 2023zvq). --- Isao Endoh (NAOJ)