RS Puppis
Star
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RS Puppis is a Cepheid variable star around 6,000 ly away in the constellation of Puppis. It is one of the biggest and brightest known Cepheids in the Milky Way galaxy and has one of the longest periods for this class of star at 41.5 days. Wikipedia
Radius: 86.46 million mi (200 R☉)
Surface temperature: 5,143 K
Mass: 1.989 × 10^31 kg (10 M☉)
Constellation: Puppis
Magnitude: 3.71
Declination: −34° 34′ 42.7023″
Distance to Earth: 5,577 light years