File:Messier_71,_an_Unusual_Globular_Cluster.jpg · Wikimedia Commons · See Wikimedia Commons
In the Vinony graph
Vinony's link graph records 409 inbound references to Messier 71, and connects out to New General Catalogue, light-year and Messier object.
Vinony files it under Astronomical objects discovered in 1745, Globular clusters and Messier objects.
Vinony links it to 51 Wikipedia language editions.
Key facts
- Class
- X–XI
- Constellation
- Sagitta
- Right ascension
- 19 53 46.49
- Declination
- +18 ° 46 ′ 45.1 ″
- Distance
- 13.0 kly (4.0 kpc )
- Apparent dimensions v
- 7.2'
- Mass
- 1.7 × 10 M ☉
- Radius
- 13 ly
- Metallicity
- [ Fe/H ] = –0.78 dex
- Estimated age
- 9–10 Gyr
- Other designations
- M71, NGC 6838, Cr 409, GCl 115
via Wikipedia infobox
Wikidata facts
- Instance of
- globular cluster
- Part of
- Milky Way
- Constellation
- Sagitta
- Distance from Earth
- 0.004
- Radius
- 14
- Image
- Messier 71 Hubble WikiSky.jpg
Show 15 more facts
- spectral class
- X-XI
- radial velocity
- -80.0
- absolute magnitude
- -5.61
- metallicity
- -0.81
- Commons category
- Messier 71
- catalog code
- [KPS2012] MWSC 3200
- Commons gallery
- Messier 71
- discoverer or inventor
- Jean-Philippe de Cheseaux
- time of discovery or invention
- 1745-00-00
- apparent magnitude
- 7.973
- right ascension
- 298.443708
- declination
- 18.779194
- epoch
- J2000.0
- right ascension component of proper motion
- -0.16
- declination component of proper motion
- -3.93
Sources (1)
via Wikidata · CC0
~2 min read
Encyclopedic overview
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Messier 71 (also known as M71, NGC 6838, or the Angelfish Cluster) 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.
Excerpted from Wikipedia’s “Messier 71” article, available under the CC BY-SA 4.0 licence.