Messier 3


Messier 3
NGC 5272
M3LRGB 891x674.jpg
Observation data (J2000 epoch)
Class VI
Constellation Canes Venatici
Right ascension 13h 42m 11.23s[1]
Declination 28° 22′ 31.6″[1]
Distance 33.9 kly (10.4 kpc)
Apparent magnitude (V) +6.2[1]
Apparent dimensions (V) 18′.0
Physical characteristics
Mass 245,000 M (4.87 x 1035 kg)
Radius 90 ly
Estimated age 8 x 109 years
Other designations NGC 5272[1]
See also: Globular cluster, List of globular clusters

Messier 3 (also known as M3 or NGC 5272) is a globular cluster in the constellation Canes Venatici. It was discovered by Charles Messier in 1764, and resolved into stars by William Herschel around 1784. This cluster is one of the largest and brightest, and is made up of around 500,000 stars. It is located at a distance of about 33,900 light-years away from Earth. M3 has an apparent magnitude of 6.2,[1] making it a difficult naked eye target even with dark conditions. With a moderate-sized telescope, the cluster is fully defined. It is estimated to be 8 billion years old. It is pretty difficult to spot this object in an amateur telescope without GoTo as it has no nearby pointer stars; though it is almost exactly halfway between and on a line connecting Cor Caroli with Arcturus.

Arcturus can be used to help locate M3
Messier 3 with amateur telescope

External links

References

  1. ^ a b c d e "Messier 3". SIMBAD Astronomical Database. http://simbad.u-strasbg.fr/simbad/sim-id?Ident=Messier+3. Retrieved 2006-11-15. 

Coordinates: Sky map 13h 42m 11.23s, +28° 22′ 31.6″



Wikimedia Foundation. 2010.

Look at other dictionaries:

  • Messier 90 — Observation data Epoch J2000 Constellation Virgo[ …   Wikipedia

  • Messier 91 — Spiral Galaxy M91 Observation data (J2000 epoch) Constellation Coma Berenices Right ascension …   Wikipedia

  • Messier 60 — M60 by 2MASS Observation data (J2000 epoch) Constellation Virgo[ …   Wikipedia

  • Messier 98 — Observation data (J2000 epoch) Constellation Coma Berenices …   Wikipedia

  • Messier 99 — A near infrared image of M99. Credit: 2MASS/NASA. Observation data (J2000 epoch) Constellation …   Wikipedia

  • Messier 83 — An ESO image of Messier 83. Credit: ESO. Observation data (J2000 epoch) Constellation Hydra …   Wikipedia

  • Messier 73 — Observation data (J2000 epoch) Constellation Aquarius …   Wikipedia

  • Messier 41 — Credit: 2MASS/NASA Observation data (J2000 epoch) Constellation …   Wikipedia

  • Messier 74 — Observation data (J2000 epoch) Constellation Pisces …   Wikipedia

  • Messier — ist der Familienname folgender Personen: Charles Messier (1730–1817), französischer Astronom Éric Messier (* 1973), kanadischer Eishockeyspieler George Messier (1896–1933), französischer Industrieller Jean Marie Messier, französischer… …   Deutsch Wikipedia

  • Messier 15 — M15 photographed by HST. The planetary nebula Pease 1 can be seen as a small blue object to the lower left of the core of the cluster. Observation …   Wikipedia


Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.