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V762 Cassiopeiae is a red supergiant and a variable star located about 2,500 light-years away in the Cassiopeia constellation. Its apparent magnitude vary between 5.82 and 5.95, which makes it faintly visible to the naked eye under dark skies. It is a relatively cool star with an average surface temperature of 3,869 K.
The primary star system, AR Cassiopeiae, is a triple. AR Cassiopeiae B is located 0.800″ away from AR Cassiopeiae A. [9] AR Cassiopeiae A itself is an Algol-type eclipsing binary with an orbital period of about 6.07 days. [4] Its primary is a B-type main-sequence star, and the secondary an A-type main-sequence star. The secondary star may be ...
A difference of 1.0 in magnitude corresponds to the brightness ratio of , or about 2.512. For example, a magnitude 2.0 star is 2.512 times as bright as a magnitude 3.0 star, 6.31 times as magnitude 4.0, and 100 times magnitude 7.0.
[8] [9] Every interval of one magnitude equates to a variation in brightness of 5 √ 100 or roughly 2.512 times. Consequently, a magnitude 1 star is about 2.5 times brighter than a magnitude 2 star, about 2.5 2 times brighter than a magnitude 3 star, about 2.5 3 times brighter than a magnitude 4 star, and so on.
The most massive type of degenerate star is the neutron star. See Most massive neutron star for this recordholder. [NB 4] Most massive neutron star PSR J0740+6620: 2019 2.14 M Sun: Several candidates exist which have a higher mass, however their mass has been measured by less precise methods and as such their mass value is regarded as less ...
Neutron stars are stellar remnants produced when a star of around 8–9 solar masses or more explodes in a supernova at the end of its life. They are usually produced by stars of less than 20 solar masses, although a more massive star may produce a neutron star in certain cases. [2] 4U 1820-30: 9.1 Pulsar [3] PSR B0943+10: 10 or 2.6 [a] Pulsar ...
Rho Cassiopeiae (/ ˌ r oʊ k æ s i ə ˈ p iː aɪ,-s i oʊ-,-iː /; ρ Cas, ρ Cassiopeiae) is a yellow hypergiant star in the constellation Cassiopeia.It is about 8,150 light-years (2,500 pc) from Earth, yet can still be seen by the naked eye as it is over 300,000 times brighter than the Sun.
7 Andromedae (abbreviated 7 And) is a single, [9] yellow-white hued star in the northern constellation of Andromeda. 7 Andromedae is the Flamsteed designation.It is visible to the naked eye with an apparent visual magnitude of 4.52, [2] and is located 79.6 light years from Earth, based on an annual parallax shift of 41 mas. [1]