SIMBAD references

2000IBVS.4983....1S - IAU Inform. Bull. Var. Stars, 4983, 1 (2000/November-0)

Discovery of eclipsing binary nature of SAO 31628 = BD+49 2997, common comparison star for CH Cygni.

SOKOLOSKI J.L. and STONE R.P.S.

Abstract (from CDS):

SAO 31628, which is frequently used as a constant comparison star in observations of the variable symbiotic CH Cygni, has been found to be an eclipsing binary. The eclipse, which is seen in B light, lasts 5 hours and produces a flux decrease of over 20. We propose that SAO 31628 has an orbital period of 3.74783(3) days.

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Journal keyword(s):

Simbad objects: 2

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