Optical counterpart of the Gamma-ray source Fermi J0607.8+0843
ATel #17685; Roberto Nesci (INAF/IAPS)
on 17 Feb 2026; 11:23 UT
Credential Certification: Roberto Nesci (roberto.nesci@inaf.it)
Subjects: Optical, Gamma Ray, AGN, Blazar
Referred to by ATel #: 17693
Following the report of a new Gamma ray source by Rani et al. (ATel #17684) tentatively corresponding to the radio source TXS 0605+086, I made a forced photometry search in the ATLAS archive since MJD 57318 for a source at the VLBI coordinates 06:08:13.0 +08:40:25 (Petrov \& Kovalev 2025, ApJS, 276, 38). Within 1 arcsec from this position there is a fast and irregularly variable point-like source with average magnitude o=15.7, rms deviation 0.4 mag and a rather blue (0.3 mag) c-o color.
In the VSX catalog the nearest known variable star is at 1.8 arcmin from the VLBI coordinates: it is a Delta Sct type star detected by Gaia, with G magnitude 14.85 and 0.03 mag amplitude, which is clearly unrelated with the Gamma ray source.
Optical spectroscopic follow-up of this source is suggested to clarify if it is actually an AGN.
