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V354 Cephei

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description V354 Cephei Overview

V354 Cephei is a red supergiant star located in the Milky Way galaxy within the northern constellation of Cepheus. Astronomical observations indicate that the star possesses a radius estimated to be roughly 1,500 times greater than that of the Sun, placing it among the largest known stars in the universe. Due to its extreme size and luminosity, it serves as an important subject for astrophysicists studying stellar evolution and mass loss.

help V354 Cephei FAQ

What type of star is V354 Cephei?

V354 Cephei is a red supergiant and an irregular variable star in the northern constellation Cepheus. Its classifications are commonly given in the M2.5 Iab to M3.5 Ib range.

How large is V354 Cephei compared with the Sun?

Published estimates commonly place its radius around 1,250 solar radii, while broader descriptions sometimes round the figure toward 1,500. The estimate is model-dependent, so it should not be treated as an exact fixed measurement.

How far away is V354 Cephei?

V354 Cephei is more than 13,000 light-years away and is associated with the Cepheus OB1 star-forming region. Its great distance and cool red color make it an object primarily studied with telescopes.

What would happen if V354 Cephei replaced the Sun?

A star with a radius around 1,250 solar radii would extend through the inner Solar System, roughly reaching between the orbits of Mars and Jupiter. This is a scale comparison, not a prediction that the star will ever approach the Solar System.

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