HR 2275 is a periodic variable, though the details and mechanism of its variability have not been described in detail. As an evolvedredgiant, it is some sixty-five times the diameter of the Sun, and more than six hundred times as luminous. That luminosity level varies by 0.01 magnitudes over a period of nearly nine days.
With an apparent magnitude of +4.92, the star will be faintly visible to the naked eye in a clear sky, but its relative faintness is a product of its great distance from the Sun (a distance of some 465 light years). This is in fact a luminousredgiantstar shining with a light some sixty or seventy times brighter than that of the Sun. If it lay at a distance of ten parsecs (the standard for calculating absolute magnitude), HR 2275 would shine as brightly as Jupiter in the skies of Earth.
HR 2275 is a variablestar, showing a gradual and periodic change in magnitude over time. The star'sbrightness varies only slightly, rising and falling by a hundredth of a magnitude across a period of 8.9 days, but the mechanism behind this variability is not currently understood in detail. There are some indications that the primaryredgiant may have a much fainter binary companion, though the existence of this companion star has yet to be definitively confirmed.
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