Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J17424899-0146547

TCP J17424899-0146547   2025 06 18.6213*  17 42 48.99 -01 46 54.7  14.5 U             Oph       9 9

2025 06 18.6213

Discovered by Tadashi Kojima, Tsumagoi,Gunma-ken, Japan, on three frames(4_s exp) taken by Canon EOS 6D digital camera + 300mm f/2.8 lens. For reference magnitude estimates 2025 Feb28.790UT<15.3(10s exp), 2025 Mar23.749UT 14.5, 2025 Apr03.709UT 14.4, 2025 Jun04.651UT 14.5 with same instrument. It is a Mira-type variable star(NSVS J1742490-014654), but it remains bright for a long time.