Discovery of DLT18w/AT2018bko with PROMPT and the DLT40 Survey
ATel #11638; D. Sand (Arizona), S. Valenti (UC Davis), S. Wyatt (Arizona), S. Yang (INAF-OAPd), D. E. Reichart, J. B. Haislip, V. Kouprianov (UNC)
on 12 May 2018; 23:36 UT
Distributed as an Instant Email Notice Transients
Credential Certification: David Sand (dave.j.sand@gmail.com)
Subjects: Optical, Transient
Referred to by ATel #: 11639
We report the discovery of DLT18w/AT 2018bko, which was first imaged by the PROMPT 0.41m telescope located at Meckering Observatory on 2018 May 12.67 (UT) at r~17.0 mag during the ongoing D<40 Mpc (DLT40) sub-day cadence supernova search. A confirmation image was obtained on 2018 May 12.96 with the PROMPT5 telescope at CTIO, with an r~16.5 mag. DLT18w is located at RA: 09:12:26.593 DEC: -58:46:32.14 (~4.2 arcmin from the potential host galaxy ESO 126-001). Due to the low galactic latitude of this transient, and its remote location from its potential host, it is also plausibly a Galactic transient. We do not detect the transient on 2018 May 11.3 or in prior imaging of the field. All images were taken in a 'Clear' (PROMPT5) or 'Open' (PROMPT-MO) filter which was calibrated to an approximate r-band magnitude. Further observations are encouraged.
