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V1054 Oph - KUI 75

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#1 ssmith

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Posted 25 August 2019 - 08:48 AM

As part of my continuing photographic survey of the closest stars I recently visited V1054 Ophiuchus which is located 21 light years away ranking it #95 of the 100 closest stars.  It is also a notable quintuple star system - KUI 75.  All of its members are red dwarfs ranging from magnitude 10 to magnitude 17. 

 

Its faintest member - Vanbiesbroeck 8 - is one of the least massive stars known at ~0.08 Msun – the lower limit for nuclear fusion.

 

This system is notable in many other respects too numerous to go into here and I recommend reading the Wikipedia entry for V1054 Oph or this paper.

 

V1054 & Gliese 643 will be within visual reach for most.  It is just past the meridian in the early evening so there is time to take a crack at this one. I was able to capture VB 8 in my photos but it is clearly near the limits of my imaging system.

 

V1054 Oph C9 8-18-19 10fr invert.jpg


Edited by ssmith, 25 August 2019 - 08:56 AM.

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