Girish Mahajan (Editor)

NGC 6642

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Right ascension
  
18 31 54.23

Distance
  
26.4 kly (8.1 kpc)

Declination
  
−23° 28′ 34.1″

Apparent dimensions (V)
  
48"

NGC 6642

Mass
  
7005109000000000000♠1.09×10 M☉

Metallicity
  
[ Fe / H ] {\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}  = –1.26 dex

NGC 6642 is a globular cluster located 26,400 light years from Earth. Many "blue stragglers" (stars which seemingly lag behind in their rate of aging) have been spotted in this globular, and it is known to be lacking in low-mass stars.

References

NGC 6642 Wikipedia
(Text) CC BY-SA