Messier 71, an Unusual Globular Cluster

M71 · globular cluster

Messier 71

Messier 71 is a globular cluster in the small northern constellation Sagitta.

RA19h 53m 46sDec+18° 46' 42"

Image: ESA/Hubble and NASA. CC BY 3.0, via Wikimedia Commons.

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Identity & coordinates

Identification

Primary designation
M71
All designations
M71 · NGC 6838
Object type
Globular Cluster
Constellation
Sagitta
Best viewing
Summer

Coordinates & physical

Right ascension (J2000)
19h 53m 46s
Declination (J2000)
+18° 46' 42"
Apparent magnitude (V)
Distance
III

Visibility tonight

V

The science

Messier 71 is a globular cluster in the small northern constellation Sagitta. It was discovered by Philippe Loys de Chéseaux in 1745 and included by Charles Messier in his catalog of non-comet-like objects in 1780. It was also noted by Koehler at Dresden around 1775. Messier 71 is also known as NGC 6839, though this identification is very uncertain.

Summary adapted from Wikipedia · CC-BY-SA-4.0

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References

Wikipedia title resolved via designation — fell back to an alternate catalog designation.

1 merge conflict resolved
  • coordinates: SIMBAD missing → NED used