NGC 6633

Alt. Designations:

NGC 6633

Object Type:

open cluster

Constellation:

Ophiuchus

Distance:

1.04 kly

Right Ascension:

18h 27m 15.1s

Declination:

+06° 30´ 30"

Visual Magnitude:

4.6

Apparent Dimension:

20.0´ Dia.

Best Month To View:

Jun

NGC 6633 is an open cluster, in the constellation Ophiuchus, that is nearly as large as the full moon, and contains 30 stars which make it shine at a total magnitude of 4.6; the brightest star is of mag 7.6. Its age was estimated at 660 million years.