Magnitude 4.54 Apparent magnitude (V) 4.54 | Constellation Sagittarius | |
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X Sagittarii is a bright giant Cepheid variable star in the constellation Sagittarius.
This variable star changes in apparent magnitude from 4.90 to 4.20 magnitude with a period of 7.01 days. Its change in brightness is accompanied by a change in spectral classification, from G2 to F5. It is approximately 990 light years away based on parallax.
References
X Sagittarii Wikipedia(Text) CC BY-SA