Lambda Cassiopeiae

Starbox begin
name=λ CassiopeiaeStarbox observe
epoch=J2000.0
constell=Cassiopeia
ra=00^h31^m46.4^s
dec=+54°31′20″
appmag_v=+5.5/+5.8Starbox character
class=B7.5V/B8.5V
b-v=−0.10
u-b=−0.35
variable=noneStarbox astrometry
radial_v=−12
prop_mo_ra=40.78
prop_mo_dec=−14.81
absmag_v=+0.3/+0.6
parallax=9.20
p_error=1.06
dist_ly=355
dist_pc=109Starbox catalog
names=14 Cassiopeiae, HR 123, HD 2772, BD+53°82, HIP 2505, SAO 21489, GC 618, ADS 434, CCDM J00318+5431

Lambda Cassiopeiae (λ Cas / λ Cassiopeiae) is a binary star in the constellation Cassiopeia. The system has a combined apparent magnitude of +4.74 and is approximately 355 light years from Earth.

Both components are blue-white B-type main sequence dwarfs. The brighter, λ Cassiopeiae A, has an apparent magnitude of +5.5, while its companion, λ Cassiopeiae B, has an apparent magnitude of +5.8. The two stars are separated by 0.6 arcseconds and complete one orbit around their common centre of mass once every 640 years.