Sky position and adopted distance
Lagoon Nebula is placed at J2000 RA 18.1 h, Dec -24.4° in Sagittarius, at an adopted distance of 4,100 light-years.
Also known as M8, Messier 8, NGC 6523.
One record per aspect. The origin says what kind of thing each value is; the source says where it came from; the limit says what it cannot tell you.
Lagoon Nebula is placed at J2000 RA 18.1 h, Dec -24.4° in Sagittarius, at an adopted distance of 4,100 light-years.
Lagoon Nebula (star-forming emission nebula; central source Herschel 36, massive multiple star system): measured footprint 100 × 50 light-years; display depth 14 light-years (not measured); outer radius used for arrival 50 light-years.
The 100 × 50 light-year footprint, Herschel 36, Hourglass core, NGC 6530, and half-light-year twisters follow published observations. The depth of the larger molecular cloud is not measured here, so the thin display volume is explicitly reconstructed.