We report an increase of the J-band brightness of the unique supergiant FG Sge by
the summer of 2010.
It follows from our IR observations of the star (1986-2010) that its J-band
brightness level in August, 2008
reached an absolute minimum (~12m), and till
of the summer of 2010, the star was almost inaccessible for observations at 1.25
2010, the star was brighter by approximately 1m in the J band
in the summer of 2008. A month later, by the end of August, 2010, the J-band brightness
of the star
increased by 1m and was already ~10m. At 3.5-5.5
the brightness fluctuations
of FG Sge in 2008-2010 had an amplitude of 0.2m. The figure
J-filter brightness variations
of FG Sge in 1986-2010. The arrow marks the beginning of J-band brightness increase
of the star in 2010.