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Proper Name	None
Bayer Designation	Phi Persei
Flamsteed Number	54 Andromedae
HR (BSC)	496
HD	10516
Constellation	Perseus
Right Ascension	1h 43m 40s
Declination	+50° 41' 19"
Distance	718 light years 220 parsecs
Magnitude	Apparent: +4.0 to +4.1 Absolute: -2.7
Spectral Class	B2Vep blue main sequence star
Optimum Visibility	October / November (Usually visible from northern latitudes)
Notes	This star lies just within Perseus' formal border with Andromeda, but Flamsteed, working before the border was officially specified, placed the star in Andromeda instead (hence it is both Phi Persei and 54 Andromedae). This is an eruptive variable star with a period of just under twenty days.

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