Central Bureau for Astronomical Telegrams

CBAT "Transient Object Followup Reports"

TCP J06161010+1243200

TCP J06161010+1243200   2021 03 31.5191*  06 16 10.10 +12 43 20.0  13.7 U             Ori       9 0

2021 03 31.5191

Discovered by Yuji Nakamura, Kameyama, Mie, Japan, on two frames (30-s exp. limiting mag 15.0) taken by 10cm/F3.0 refractor and CMOS camera. Nothing is visible at this location on the frames taken on 2021 Mar. 23.5706 UT (30-s exp. limiting mag 15.0) by same instrument.

2021 03 31.2363

This transient was also reported (earlier) by the All-Sky Automated Survey for Supernovae (ASAS-SN) as ASASSN-21eo ("CV candidate near the Galactic plane, no Vizier match, g>16.8 on 2021-03-28.04, g=14.1 on 2021-03-31.23"): http://www.astronomy.ohio-state.edu/~assassin/transients.html — No previous brightenings were recorded the ASAS-SN Sky Patrol (Shappee et al. 2014ApJ...788...48S and Kochanek et al. 2017PASP..129j4502K) since 2014 December 16; complete light curve and data at https://asas-sn.osu.edu/sky-patrol/coordinate/f4b64336-ec9a-4954-a88f-6fa1f085c437 — PSO J061610.167+124319.621 (Pan-STARRS1 DR2 position 06 16 10.17 +12 43 19.6; gmag. 22.7, rmag. 22.3, imag. 22.6) is the likely progenitor. Patrick Schmeer (Saarbrücken-Bischmisheim, Germany)

2021 04 01.420

follow-up : mag is +15.329U(Rmag) Comparison star UCAC-4 with 0.36m FLI ML1001E 30sec×15, obs by, Yasuo Sano(Nayoro Hokkaido, Japan) http://sn1997ef.web.fc2.com/sn/other/20210401/01.html