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Krüger 60

Gliese 860, LHS 3815, HD 239960
DO Cephei (B component)

Red binary system in Cepheus

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Proper Name	None
Bayer Designation	None
Flamsteed Number	None
HR (BSC)	None
HD	239960
Variable Designation	DO Cephei (B component)
Other Designations	Krüger 60, Gliese 860, LHS 3815
Constellation	Cepheus
Right Ascension	22h 28m 0s (A), 22h 28m 0s (B)
Declination	+57° 41' 42" (A), +57° 41' 50" (B)
Distance	13.1 light years / 4.0 parsecs (A) 13.0 light years / 4.0 parsecs (B)
Magnitude	Apparent: +11.41 (A), +11.40 (B) Absolute: +13.39 (A), +13.39 (B)
Spectral Class	M3V red dwarf (A), M4V red dwarf (B)
Optimum Visibility	September (Usually visible from northern latitudes)

To the east and a little to the north from Krüger 60 is another red star that appears superficially similar (and indeed is sometimes listed as Krüger 60 C). This is the bright giant VVO 85, and based on its parallax data it is not only unrelated to the Krüger 60 binary, but immensely more distant and more luminous. If the two stars lay at the same distance from Earth, VVO 85 would outshine Krüger 60 by a factor of more than fifty thousand. Imagery provided by Aladin sky atlas

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