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HR 2113

BSC 2113, HD 40657

Proper NameNone
Bayer DesignationNone
Flamsteed NumberNone
HR (BSC)2113
Right Ascension6h 0m 3s
Declination-3° 4' 27"
Distance333 light years
102 parsecs
MagnitudeApparent: +4.53
Absolute: -0.52
Spectral ClassK1.5IIIFe-1.5 orange giant
Optimum VisibilityJanuary

An orange star in Orion, lying close to that constellation's border with Monoceros to the southeast. HR 2113 lies southward from bright red Betelgeuse, and eastward on an approximate line through Orion's Belt. With an apparent magnitude of +4.53, this is a faint star as seen fro Earth, but nonetheless bright enough to be seen with the naked eye under suitable conditions. The star has an absolute magnitude of -1.02, meaning that, if it lay ten parsecs from the Sun, this would be among the brightest stars in the sky.

The nebulosity visible in western (right-hand) part of this image is part of the Orion Molecular Cloud, a vast region filling much of the constellation of Orion. HR 2113 lies on the eastern edge of Barnard's Loop, an expansive part of the Cloud that surrounds the Orion Nebula. Imagery provided by Aladin sky atlas

HR 2113 is an orange giant star lying approximately 333 light years from the Sun. Though only approximately half the Sun's age, it is nonetheless considerably more massive, and such massive stars pass more rapidly through their lifecycle than a dwarf like the Sun. This giant star is estimated to be some thirty times the diameter of the Sun, and about two hundred times as luminous. There are some indications of slight variability in the brightness of HR 2113.