Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

PNV J19430751+2100204

PNV J19430751+2100204   2024 07 29.8317*  19 43 07.51 +21 00 20.4  11.2 U             Vul       9 0

2024 07 29.8317

The transient source was identified at wide-field images obtained with a 135mm f/2.0 telephoto lens + unfiltered SBIG ST-8300M CCD in the framework of the New Milky Way survey operating at the Astroverty astrofarm in Nizhnii Arkhyz, Karachay-Cherkessia, Russia ( http://scan.sai.msu.ru/nmw/ ). The discovery images are available at http://scan.sai.msu.ru/~kirx/img/PNVJ19430751+2100204/ ---- Kirill Sokolovsky (UIUC, SAI MSU), Stanislav Korotkiy (Astroverty, Ka-Dar), Nikolay Potapov, Sergei Ostapenko for the NMW team

2024 07 28.8399

The latest non-detection of the transient by the NMW survey was on 2024-07-28.8399 UT setting an upper limit on the transient's brightness at the time: CV>14.5 (The unfiltered magnitude zero-point was set using V magnitudes of APASS stars in the field). No previous eruptions are present in the ASAS-SN data with the latest non-detection on 2024-07-27.49226 g>16.5: https://asas-sn.osu.edu/sky-patrol/coordinate/f677e0b4-1c8e-4def-a901-83d15cd53820 ---- Kirill Sokolovsky (UIUC, SAI MSU), Stanislav Korotkiy (Astroverty, Ka-Dar), Nikolay Potapov, Sergei Ostapenko for the NMW team

2024 07 30.5208

Object is now brightening. V mag= 9.79

2024 07 30.513

Confirm object at that location, mag 9.9 (TG). Canon 800D & 200mm lens. Object quite red in high saturation. Observer Rob Kaufman, Bright, Vic, Australia (36.7 S, 147.0 E).

2024 07 30.5208

Photometry results were B =11.51, V =9.79, Ic =7.79. position end figures 07s.50, 21".4 An image at http://orange.zero.jp/k-yoshimoto/PNV_J19430751+2100204_20240730.jpg using 0.20-m f/8 Ritchey-Chretien + CMOS + f/5.4 focal Reducer; P87 Hirao Observatory. observed by K. Yoshimoto, Yamaguchi, Japan.

2024 07 30.575

Position end figures 07s.49, 21.2" measured with 0.05m f/5 refractor + CCD. J2000, Gaia DR2 positions. Transient position within 0.2" of Gaia 1825912166611947136 (magnitude 19.8 G). Photometry - magnitude 9.86 (V), 11.40 (TB) and 9.21 (TR). Andrew Pearce, Nedlands, Western Australia

2024 07 30.44764

Photometry at 30.44764 B=11.452 (0.036) V=9.803 (0.036) BV=1.650 Telescope T5 (0.25-m f/3.4 reflector) Utah USA. Image available at: https://flic.kr/p/2q7dfpJ

2024 07 29.513

Nothing is visible at this location taken on 2024 07 29.513UT under limiting mag.=14.0 taken by Canon EOS 6D digital camera + 300mm f/2.8 lens. Tadashi Kojima, Tsumagoi,Gunma-ken, Japan.