· · · ·

Melotte 190

NGC 6539

Proper NameNone
Messier NumberNone
NGC/IC NumberNGC 6539
Other DesignationsMelotte 190
ConstellationSerpens
Right Ascension18h 4m 50s
Declination-7° 35' 9"
Distancec. 26,600 light years
c. 8,200 parsecs
MagnitudeApparent: +9.32
Absolute: -5.24
DiameterApparent: 7.9'
Actual: 59 light years
Optimum VisibilityJuly

Imagery provided by Aladin sky atlas

Melotte 190

The loose globular cluster Melotte 190 lies in the central regions of the Galaxy, about 25,000 light years from the Solar System.

The region of the Milky Way running from Ophiuchus to Serpens Cauda - the Serpent Holder and the Serpent's Tail - is a part of the sky looking in the approximate direction of the Galaxy's core, and is busy with globular clusters. Most prominent among these is M14, but to the south and east of that cluster is Melotte 190 (or NGC 6539), lying just within the borders of Serpens.

Melotte 190 is slightly nearer to the Solar System than M14, but its immense distance of nearly 27,000 light years places it in the vicinity of the Galaxy's central bulge. This is a loose accumulation of stars, not so distinctly globular as many clusters of this type, occupying a very approximate sphere some sixty light years in diameter.

Indexes

Related Entries