Theta Cassiopeiae
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Observation data Epoch J2000.0 |
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Constellation | Cassiopeia |
Right ascension | 01h11m06.2s |
Declination | +55°08′59″ |
Apparent magnitude (V) | +4.34 |
Distance | 137 ± 4 ly (42 ± 1 pc) |
Spectral type | A7V |
Other designations | |
Theta Cassiopeiae (θ Cas / θ Cassiopeiae) is a star in the constellation Cassiopeia. It also has the traditional name Marfark or Marfak, which it shares with μ Cassiopeiae.
θ Cassiopeiae is a white A-type main sequence dwarf with an apparent magnitude of +4.34. It is approximately 137 light years from Earth.