Messier 30

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Globular cluster
Messier 30
HST recording
HST recording
AladinLite
Constellation Capricorn
Position
equinoxJ2000.0 , epoch : J2000.0
Right ascension 21 h 40 m 22.03 s
declination −23 ° 10 ′ 44.6 ″
Appearance
Concentration class V
Brightness  (visual) 7.7 likes
Angular expansion 12.0 '
Physical data
Integrated spectral type F3
Redshift (−615 ± 3)  ·  10 −6
distance 26.1  kLj
(8  kpc ) 
history
discovery Charles Messier
Discovery date August 3, 1764
Catalog names
 M  30 •  NGC  7099 • C 2137-234 •  GCl  122 •

Messier 30 (also known as NGC 7099 ) is a 7.7  mag bright globular cluster with an angular extent of 12.0 'in the constellation Capricorn . Its total mass is estimated to be around 300,000 solar masses .

The elliptical orbit of M 30 is inclined by about 50 ° to the galactic plane , during its 160 million year orbit around the galactic center it can alternately approach it up to 10,000 light years or move away from it up to 25,000 light years.

The object was discovered on August 3, 1764 by Charles Messier from Paris

Web links

Commons : Messier 30  - album with pictures, videos and audio files

Individual evidence

  1. a b c SIMBAD
  2. ^ NED data for the Messier Objects
  3. a b Messier 30 at SEDS
  4. a b http://cseligman.com/text/atlas/ngc70a.htm#7099
  5. Stars and Space August 2007 p. 68