Q840301
Sign in to saveGlobular cluster in the constellation Musca
Key facts
- Class
- VIII
- Constellation
- Musca
- Right ascension
- 12 59 33.92
- Declination
- –70 ° 52 ′ 35.4 ″
- Distance
- 21.5 kly (6.6 kpc )
- Apparent magnitude v
- +7.79
- Apparent dimensions v
- 13.5 ′
- Absolute magnitude
- −8.16
- Mass
- 4.10 × 10 M ☉
- Radius
- 42 ly
- Metallicity
- [ Fe/H ] = –2.02 dex
- Estimated age
- 12.54 Gyr
- Other designations
- NGC 4833, Caldwell 105, GCl 21, Lacaille I.4, Dunlop 164, Bennett 56
via Wikipedia infobox
Wikidata facts
- Image
- NGC 4833 Hubble WikiSky.jpg
Show 9 more facts
- Commons category
- NGC 4833
- time of discovery or invention
- 1751-00-00
- catalog code
- [KPS2012] MWSC 2077
- apparent magnitude
- 7.034
- right ascension
- 194.891333
- declination
- -70.876500
- radial velocity
- 201.1
- right ascension component of proper motion
- -8.110
- declination component of proper motion
- -0.9600
Sources (1)
via Wikidata · CC0
~3 min read
Article
The location of NGC 4833 (labelled in red) NGC 4833 is a globular cluster discovered by Abbe Lacaille during his 1751–1752 journey to South Africa, and catalogued in 1755. It was subsequently observed and catalogued by James Dunlop and Sir John Herschel whose instruments could resolve it into individual stars.
The globular cluster is situated in the very southerly constellation Musca at a distance of 21,500 light years from Earth. It is located near the Coalsack Nebula and is partially obscured by this dusty region of the galactic plane. After corrections for the reddening by dust, evidence was obtained that it is in the order of 2 billion years older than globular clusters M5 or M92.