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Central Bureau for Astronomical Telegrams -- Image credits

CBAT "Transient Object Followup Reports"

TCP J20171288+1156589

TCP J20171288+1156589   2025 07 19.5618*  20 17 12.88 +11 56 58.9  15.4 U             Del       9 4

2025 07 19.5618

Discovered by Yuji Nakamura, Kameyama, Mie, Japan, on four frames (15-s exp. limiting mag. 16.5) using 0.10-m F3.0 refractor + unfiltered cooled CMOS camera. Nothing is visible at this location on the frames taken on 2025 July 15.5743 UT (15-s exp. limiting mag. 16.0). --- Hitoshi Yamaoka (NAOJ)

2025 07 20.4805

Follow-up obserbation by Yuji Nakamura, Kameyama, Mie, Japan: 2025 July 20.4805 UT, mag.=15.4 (30-s exp. limiting mag. 16.5) using 0.20-m F5.4 reflector + unfiltered cooled CMOS camera. Position end figures 12s.82, 59".6. --- Isao Endoh (NAOJ)

2025 07 21.743

Mag=16.1 , 0.35-m F/11 + CCD (KAF-1001E) , 20 17 12.85 +11 56 59.0 , http://k-itagaki.jp/images/Del-2025-07.jpg , K.itagaki