Messier 68

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Messier 68
Observation data: J2000 epoch
Class: X
Constellation: Hydra
Right ascension: 12h 39m 28.01s[1]
Declination: -26° 44′ 34.9″[1]
Distance: 33.3 kly[citation needed] (10.2 kpc)
Apparent magnitude (V): +9.67[1]
Apparent dimensions (V): 11′.0
Physical characteristics
Mass: - (- M☉)
Radius: 53 ly[2]
VHB: -
Estimated age: 11.2 Gyr
Notable features: Relatively metal poor.[citation needed]
Other designations: M68, NGC 4590, GCl 20[1]
See also: Globular cluster, List of globular clusters


M68 is also an optical firearm sight.

Messier 68 (also known as M68 or NGC 4590) is a globular cluster in the Hydra constellation. It was discovered by Charles Messier in 1780. M68 is at a distance of about 33,000 light-years away from Earth.

[edit] External links

[edit] References

  1. ^ a b c d SIMBAD Astronomical Database. Results for NGC 4590. Retrieved on 2006-11-17.
  2. ^ distance × sin( diameter_angle / 2 ) = 53 ly. radius


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