ο1 Cygni,[9] BD+46° 2881, GC 28091, HIP 99639, HR 7730, HD 192514, SAO 49332, WDS J20136+4644D, CCDM J20135+4646D
Database references
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data
30 Cygni at top left, with 31 Cygni A and B at lower right
30 Cygni (ο1 Cygni) is a class A5III (white giant) star in the constellation Cygnus. Its apparent magnitude is 4.83 and it is approximately 610 light years away based on parallax.
The Bayer letter ο (omicron) has been variously applied to two or three of the stars 30, 31, and 32 Cygni. 30 Cygni has sometimes been designated as ο1 Cygni with the other two stars being ο2 and ο3 respectively. For clarity, it is preferred to use the Flamsteed designation 30 Cygni rather than one of the Bayer designations.[9]
30 Cygni is about six arc-minutes from 31 Cygni A and seven arc-minutes from 31 Cygni B. That pair is known as ο1 Cygni, while ο2 Cygni is a degree away. Both ο1 and ο2 are 4th magnitude stars.
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^ abKostjuk, N. D. (2004). "VizieR Online Data Catalog: HD-DM-GC-HR-HIP-Bayer-Flamsteed Cross Index (Kostjuk, 2002)". VizieR On-line Data Catalog: IV/27A. Originally Published in: Institute of Astronomy of Russian Academy of Sciences (2002). 4027. Bibcode:2004yCat.4027....0K.
30Cygni (ο1 Cygni) is a class A5III (white giant) star in the constellation Cygnus. Its apparent magnitude is 4.83 and it is approximately 610 light years...
consisting of Deneb, Gamma Cygni, Delta Cygni, 30Cygni, Nu Cygni, Tau Cygni, Upsilon Cygni, Zeta Cygni and Epsilon Cygni. Consequently, the Chinese name...
designations are unambiguous: ο1 Cygni: 31 Cygni, sometimes 30Cygni ο2 Cygni: 32 Cygni, sometimes 31 Cygni ο3 Cygni: sometimes 32 Cygni This article includes a...
consisting of Gamma Cygni, Delta Cygni, 30Cygni, Alpha Cygni, Nu Cygni, Tau Cygni, Upsilon Cygni, Zeta Cygni and Epsilon Cygni. Consequently, the Chinese...
consisting of Epsilon Cygni, Gamma Cygni, Delta Cygni, 30Cygni, Alpha Cygni, Nu Cygni, Tau Cygni, Upsilon Cygni and Zeta Cygni. Consequently, the Chinese...
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