M18 is best observed in small telescopes, which show over a dozen of fairly bright stars. It is about 0.2 degrees in diameter, thus appears loose and poor. Its distance is about 6,000 light years. It is situated between the Omega Nebula M17 and the star cloud M24.
Right ascension | 18 : 17.0 (hours : minutes) |
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Declination | -17 : 09 (degrees : minutes) |
Distance | 6.0 (light-years*10^3) |
Visual magnitude | 7.5 |