Lambda Ophiuchi (λ Ophiuchi, abbreviated Lambda Oph, λ Oph), also named Marfik, is a binary star in the constellation of Ophiuchus. It is approximately 166 light years from Earth.
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Nomenclature
λ Ophiuchi (Latinised to Lambda Ophiuchi) is the system's Bayer designation.
It bore the traditional name Marfik (or Marsik), meaning "the elbow" in Arabic. In 2016, the International Astronomical Union organized a Working Group on Star Names (WGSN) to catalogue and standardize proper names for stars. The WGSN approved the name Marfik for this star on 12 September 2016 and it is now so entered in the IAU Catalog of Star Names.
Properties
Lambda Ophiuchi belongs to spectral class A1V+A and has apparent magnitude +3.82.
References
Lambda Ophiuchi Wikipedia(Text) CC BY-SA