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Recent NIR brightening of the QSO HB890109+224

ATel #10807; L. Carrasco, E. Recillas, A. Porras, V. Chavushyan, D. Y. Mayya (INAOE, Mexico)
on 2 Oct 2017; 07:58 UT
Credential Certification: LUIS CARRASCO (carrasco@inaoep.mx)

Subjects: Radio, Infra-Red, Optical, AGN, Blazar, Transient

We report on the NIR brightening of the low redshift QSO (z=0.265) HB890109+224 also known as BZBJ0112+2244 cross identified with the radio source 87GB010923.5+222858 and the Gamma-ray source 3FGLJ0112.1+2245. On September 29th,2017 MJD(2458025.9710), we found the source with NIR fluxes corresponding to J = 12.462 +/- 0.04, H = 11.713 +/- 0.05 and Ks = 10.951 +/- 0.05. While, on MJD 2457807.626 the flux in the H band corresponded to H = 12.379 +/- 0.04. Hence, the source has increased its flux by a factor of 1.8 in this short lapse. The source is brightest since the time we started monitoring it on MJD 2455607.6. Our observations are carried out with the 2.1m telescope of the Guillermo Haro Observatory operated by the National Institute for Astrophysics, Optics and Electronics (Mexico), equipped with the instrument CANICA a NIR camera. We encourage further multi wavelength coverage.