Eta Ophiuchi


Distance (Light Years) 84.1 ± 1.9
Apparent Magnitude (combined) 2.43
Color (B-V)0.06

Description of the Star

Sabik is a close binary star system. The primary Sabik A is a white A2V main sequence star with a luminosity of about 36 time s that of the sun. Sabik B is a slightly smaller A3V main sequence star having a luminosity about 23 times that of the sun. The diameter of each star would be about twice that of the sun.

The two stars are separated by 0.86 arc seconds corresponding to a distance of of 22 AU, that is, slightly more than the separation of the sun from Uranus. The stars revolve with a period of 88 years.

Other Designations For This Star


35 Ophiuchi

Hipparcos Identifier (HIP Number)


Harvard Revised (HR Number)


Henry Draper Catalog (HD Number)


Bonner Durchmusterung (BD Number)

BD-15 4467
Smithsonian Astrophysical
Observatory compendium (SAO Number)

Fundamental Katalog (FK5 Number)



Copyright © 1998 - 2010 by Arnold V. Lesikar,
Professor Emeritus
Dept. of Physics, Astronomy, and Engineering Science,
St. Cloud State University,St. Cloud, MN 56301-4498

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