Very peculiar variable.
It keeps constant since 2008.
Irregular variation of 0.4 mag in a long term, and a short term small variation of 0.1 mag during several hours, were observed.
But no variation was detected by other surveys.
Continuous monitoring is encouraged.
It seems to be a popular semi regular variable in a long term.
But a minute-scale short term oscillation of 0.1-0.3 mag was also observed a few times.
Time series photometry is encouraged.
Optically violently variable quasar QSO B0133+47.
It is recorded as a very faint object at 18-19 mag in the 20th century.
However, it was so bright as 14 mag in 2007 November.
Then it faded down to 19.5 mag in 2012 January, faintest in its history.
It had been fainter than 17 mag since 2010, however, it brightened up to 15.66 mag in 2013 February.
Now it turns to be faint as 18-19 mag.
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T Tau type variable, a young stellar object with an H-alpha emission in a star forming region.
It brightened rapidly and reached up to 14.66 mag in 2011 autumn.
It keeps around 15.5 mag with only a small variation recently in 2012.
Dwarf nova brightened up to 12.8 mag in 2011 January.
It has already faded out, fainter than 18 mag.
It brightened rapidly by 2 mag or more, from fainter than 16.8 mag up to 14.7 mag, withiin only 4 minutes on 2011 Dec. 17.
It is possible real-time flare detection of a new flare star.
It has already faded out, fainter than 18 mag.
Bright new object of 14.1 mag discovered on Jan. 5, 2012.
It will be an outburst of an X-ray source 1RXS J074112.2-094529.
ASAS-SN detected the new outburst at 14.69 mag on Mar. 20, 2017.
It faded out quickly, fainter than 17.12 mag, on Mar. 23.
Yutaka Maeda detected the new outburst at 13.9 mag on Oct. 23, 2018.
Bright new dwarf nova brightened up to 12 mag on May 13, 2012.
Eddy Muyllaert detected the new outburst at 13.2 mag on Oct. 16, 2020.
Then it repeated brightening four times in short time.
New object discovered at 15 mag on Apr. 23, 2014.
It has already faded out, around 19.5 mag.
It rebrightened up to 14.5 mag on May 17, 2017.
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