M 10

This 7th mag globular cluster is about 8 arc minutes in diameter. At its distance of 16,000 light years, this corresponds to a linear diameter of 80 light years.

Its central region, according to Mallas, appears pear-shaped, with a grainy texture; the outer regions show brighter knots at medium magnification (120x).

According to Burnham, the extremely low number of only 3 variables has been found in M10.

Right ascension	16 : 54.5 (hours : minutes)
Declination	-04 : 02 (degrees : minutes)
Distance	16.0 (light-years*10^3)
Visual magnitude	6.7