OGLE pre-discovery of Nova Men 2022 (AT 2022ufh)
ATel #15639; R. Poleski, A. Udalski, and M. Gromadzki (University of Warsaw) on behalf of the OGLE team
on 1 Oct 2022; 11:02 UT
Credential Certification: Radoslaw Poleski (rpoleski@astrouw.edu.pl)
Subjects: Optical, Nova, Star, Transient
A transient was reported by J. Tonry et al. (ATLAS; https://www.wis-tns.org/object/2022ufh) on 2022-09-16. The equatorial coordinates are R.A.= 0 6:29:08.405, Dec. = -71:29:38.89. The transient was later classified as a classical nova and named Nova Mensa 2022 (AT 2022ufh). Here we report provisional photometry from the OGLE-IV project (Udalski et al. 2015), which recently returned to survey observations after a 2 year-long break caused by the Covid pandemic. Most importantly, we reported pre-discovery detection at 2022-09-15.35907 UT (HJD 2459837.85977). The first epoch is a non-detection, while the last one is overexposed:
| HJD | I [mag] |
|---|
| 2459827.87168 | >19.9 |
|---|
| 2459837.85977 | 14.33 |
|---|
| 2459845.86777 | 12.29 |
|---|
| 2459851.84152 | <11.5 |
|---|
