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1 Vulpeculae

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Magnitude  4.77
Apparent magnitude (V)  4.77
Constellation  Vulpecula
1 Vulpeculae
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1 Vulpeculae is a class B4IV (blue subgiant) star in the constellation Vulpecula. Its apparent magnitude is 4.77 and it is approximately 810 light years away based on parallax.

The primary, A, is a spectroscopic binary with a period around 250 days; in addition, it has companions B, with magnitude 11.6 and separation 39.1", and C, with magnitude 12.8 and separation 43.6".

Component A is also a suspected variable star, reported to vary from 4.57 to 4.77 in magnitude. It was reported as possibly variable in 1952 during a search for β CMa variables, but has not been seen to vary since. It was listed as one of the least variable stars based on Hipparcos photometry.

References

1 Vulpeculae Wikipedia


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