< Messier Index
Messier 23
Observation data (w:J2000 epoch)
Constellation Sagittarius
Right ascension 17h 56.8m
Declination −19° 01′
Distance 2.15 kly (659 Pc)
Apparent magnitude (V) 6.9
Apparent dimensions (V) 27.0′
Other designations NGC 6494

Messier 23 (also known as NGC 6494) is an w:open cluster in the w:constellation Sagittarius. It was discovered by w:Charles Messier on w:June 20, w:1764.

M23 is at a distance of about 2,150 w:light-years away from w:Earth, its radius is around 15-20 w:light years. There are some 150 identified members in this cluster, the brightest being of magnitude 9.2. M23 can be found with a modestly sized w:telescope in the rich starfields of the Sagittarius w:Milky Way.

 
Messier Index
M1 • M2 • M3 • M4 • M5 • M6 • M7 • M8 • M9 • M10 • M11 • M12 • M13 • M14 • M15 • M16 • M17 • M18 • M19 • M20 • M21 • M22 • M23 • M24 • M25 • M26 • M27 • M28 • M29 • M30 • M31 • M32 • M33 • M34 • M35 • M36 • M37 • M38 • M39 • M40 • M41 • M42 • M43 • M44 • M45 • M46 • M47 • M48 • M49 • M50 • M51 • M52 • M53 • M54 • M55 • M56 • M57 • M58 • M59 • M60 • M61 • M62 • M63 • M64 • M65 • M66 • M67 • M68 • M69 • M70 • M71 • M72 • M73 • M74 • M75 • M76 • M77 • M78 • M79 • M80 • M81 • M82 • M83 • M84 • M85 • M86 • M87 • M88 • M89 • M90 • M91 • M92 • M93 • M94 • M95 • M96 • M97 • M98 • M99 • M100 • M101 • M102 • M103 • M104 • M105 • M106 • M107 • M108 • M109 • M110
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