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Eta Orionis

28 Orionis

Blue Star in Orion

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Proper Name	None
Bayer Designation	Eta Orionis
Flamsteed Number	28 Orionis
HR (BSC)	1788
HD	35411
Constellation	Orion
Right Ascension	5h 24m 29s (A), 5h 24m 29s (B)
Declination	-2° 23' 49" (A), -2° 23' 50" (B)
Distance	977 light years 299 parsecs
Magnitude	Apparent: +3.4 Absolute: -4.0
Spectral Class	B1V Blue Main Sequence Star
Optimum Visibility	December / January

A star system nearly a thousand light years from Earth, a little to the west of the Belt of Orion. It is an eclipsing binary system consisting of two blue stars orbiting one another in a regular pattern.

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