Eta Cassiopeiae
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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Eta Cassiopeiae is a star system 19.4 light years away from Earth, in the constellation Cassiopeia. Sometimes the traditional name Achird is used. The primary star in the Eta Cassiopeiae system is a yellow dwarf star of spectral type G0V, putting it in the same spectral class as our Sun, which is of spectral type G2V. It therefore resembles what our Sun might look like if we were to observe it from Eta Cassiopeiae. The star is of apparent magnitude 3.45. The star has…mehr

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Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. Eta Cassiopeiae is a star system 19.4 light years away from Earth, in the constellation Cassiopeia. Sometimes the traditional name Achird is used. The primary star in the Eta Cassiopeiae system is a yellow dwarf star of spectral type G0V, putting it in the same spectral class as our Sun, which is of spectral type G2V. It therefore resembles what our Sun might look like if we were to observe it from Eta Cassiopeiae. The star is of apparent magnitude 3.45. The star has a cooler and dimmer orange dwarf companion of spectral type K7V. The system is an RS Canum Venaticorum type variable star and its brightness varies by 0.05 magnitudes.