czsky/en/star/hr9045.md

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name constellation created_by created_date updated_by updated_date
ρ Cas Cas editor.cs 2023-11-05 14:50:27.665054 editor.cs 2023-11-05 14:50:27.665060

An irregular variable star, similar to R Coronae Borealis, its brightness varies between 4.1mag and 6.2mag in a cycle that lasts slightly less than one year. Suitable comparison stars are σ (4.9mag) and τ Cas (4.87mag). This exceptionally luminous supergiant is located 3400 light-years away. In the sky, we see it near the star β Cas.