· · · ·
Proper NameNone
Bayer DesignationNone
Flamsteed Number4 Lacertae
HR (BSC)8541
Right Ascension22h 24m 31s
Declination+49° 28' 35"
Distancec.2,600 light years
c.800 parsecs
MagnitudeApparent: +4.59
Absolute: -4.90
Spectral ClassA0Iab white supergiant
Optimum VisibilitySeptember (Usually visible from northern latitudes)

Imagery provided by Aladin sky atlas

If Earth were closer to this supergiant star, it would shine much more brightly: at ten parsecs, white 4 Lacertae would be brighter than Venus in the sky. In reality, it is more than 2,500 light years away, and has a faint apparent magnitude of +4.90.


Related Entries