1 Cassiopeiae is a single
[ star in the northern constellation of Cassiopeia, located around 1,130 light years from the Sun.]apparent visual magnitude
Apparent magnitude () is a measure of the brightness of a star or other astronomical object observed from Earth. An object's apparent magnitude depends on its intrinsic luminosity, its distance from Earth, and any extinction of the object's lig ...
of +4.84.[ This object is moving closer to the Earth with a heliocentric radial velocity of −9 km/s.][
The stellar classification of 1 Cassiopeiae is B0.5 III,][ matching an ]evolved
Evolution is change in the heritable characteristics of biological populations over successive generations. These characteristics are the expressions of genes, which are passed on from parent to offspring during reproduction. Variation ...
B-type giant star
A giant star is a star with substantially larger radius and luminosity than a main-sequence (or ''dwarf'') star of the same surface temperature.Giant star, entry in ''Astronomy Encyclopedia'', ed. Patrick Moore, New York: Oxford University Press ...
. It is 5.7[ million years old with a ]projected rotational velocity
Stellar rotation is the angular motion of a star about its axis. The rate of rotation can be measured from the spectrum of the star, or by timing the movements of active features on the surface.
The rotation of a star produces an equatorial bulg ...
of 31.[ The star has 13.1][ times the mass of the Sun and 10.2][ times the Sun's radius. It is radiating 18,200][ times the ]Sun's luminosity
The solar luminosity (), is a unit of radiant flux (power emitted in the form of photons) conventionally used by astronomers to measure the luminosity of stars, galaxies and other celestial objects in terms of the output of the Sun.
One nominal ...
from its photosphere at an effective temperature of 27,200 K.[
]
References
{{Stars of Cassiopeia
B-type giants
Cassiopeia (constellation)
BD+58 2545
Cassiopeiae, 01
218376
114104
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