6 CAS (6 Cassiopeiae). The Star of the Week celebrates its 300th star with a magnificent white class A (A3) supergiant, one of the most luminous stars of the Galaxy. Don't let its apparent fifth magnitude (at 5.43, near sixth) dimness fool you.
08 238 V526 CAS 0 50 57.3 +51 30 29 F2IV 6.39 0.28 336 1 10 39.3 +68 46 44 A0Vnn 5.29 -0.02 345 RU CAS 1 11 41.3 +65 1 8 B9IV 5.57 -0.09 384 100102 1 21 5.2 +64 39 31 A2Vnn 6.34 0.09 427 1 31 13.7 +70 15 53 F6V 5.81 0.47 456 100125 1 38 30.
 See also: Magnitude, Light Year, Kelvin, Astronomical Unit, Association
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