Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J17233734+1902555

TCP J17233734+1902555   2023 03 31.7536*  17 23 37.34 +19 02 55.5  13.3 U             Her       9 2

2023 03 31.75362

Discovered by Hideo Nishimura, Kakegawa, Shizuoka, Japan on six frames (10-s exp. limiting mag 14.1) taken by Canon EOS 6D digital camera + 200-mm F/3.0 lens. Nothing is visible at this location on the frames taken on 2023 Mar. 29.74858 UT (limiting mag 14) by same instrument. --- Isao Endoh (NAOJ)

2023 03 31.7157

Independent discovery by Yuji Nakamura, Kameyama, Mie, Japan, (mag 13.7, position end figures 37.33s, 52".1) on four frames (30-s exp. limiting mag 16.5) taken by 0.10-m F3.0 refractor and CMOS camera. Nothing is visible at this location on the frames taken on 2023 Mar. 28.7257 UT (30-s exp. limiting mag 16.5) by same instrument. --- Isao Endoh (NAOJ)

2023 04 01.3064

Photometry results were B=13.87, V=13.96 and Ic=14.16 with T5, iTelescope.NET(0.25m, F3.4 refretor + SBIG ST-10XME) at Utah Desert Remote Observatory at Great Basin Desert, Beryl Junction, Utah, USA Seiichiro Kiyota (Kamagaya, Japan)

2023 04 02.6242

follow-up : mag is B=14.48, V=14.66, Rc=14.55 with 0.36m FLI 1001E 40 sec, Nayoro Hokkaido, Japan obs by, Yasuo Sano

2023 04 02.5798

F. Watanabe (Nayoro Observatory, Nayoro, Japan) performed a follow-up observation for this transient using a 0.4-m f/10 Meili telescope (Meade LX200-40ACF) + R-filtered CCD (SBIG STL-1001E) on Apr. 2.580 UT. The magnitude is measured to be R = 14.9 +/- 0.1 (reference stars from UCAC4 Rmag) and the position end figures are given as 37s.38, 52”.6.