New eruptive variable in the massive star-forming region associated with
  IRAS 18507+0121 source
  Aims. We report the discovery of a strong outburst of the embedded young
stellar object (YSO), namely UKIDSS-J185318.36+012454.5, located in the
star-forming region associated with IRAS 18507+0121 source and GAL 034.4+00.23
HII region. Methods. Using the archival photometric data and images we
determined the amplitude and the epoch of the outburst, as well as the
evolution stage and the basic parameters of the object. Results. According to
the near and mid-infrared colors and spectral energy distribution, we classify
the object as an intermediate-mass young stellar object (YSO) with Class 0/I
evolution stage. The outburst occurred in the period of 2004-2006. The
amplitude of brightness is as least Ks = 5.0 mag. The summation of the
photometric and spectral data does not allow to classify
UKIDSS-J185318.36+012454.5 as FUor or EXor. We can consider it as an eruptive
variable with mixed characteristics or MNor type object.
