Messier 9

Messier 9
Messier 9
Messier 9 Hubble WikiSky wfpc2 patched.jpg
Messier 9 by HST
Credit: NASA/STScI/WikiSky
Observation data (J2000 epoch)
Class VIII
Constellation Ophiuchus
Right ascension 17h 19m 11.78s[1]
Declination -18° 30′ 58.5″[1]
Distance 25.8 kly (7.9 kpc)
Apparent magnitude (V) +8.42[1]
Apparent dimensions (V) 12′.0
Physical characteristics
Radius 45 ly
Other designations NGC 6333[1]
See also: Globular cluster, List of globular clusters

Messier 9 or M9 (also designated NGC 6333) is a globular cluster in the constellation of Ophiuchus. It was discovered by Charles Messier in 1764.

M9 is one of the nearer globular clusters to the center of the Milky Way Galaxy with a distance of around 5,500 light-years. Its distance from Earth is 25,800 light-years.

The total luminosity of this cluster is around 120,000 times that of the Sun, the absolute magnitude being -8.04. The brightest individual stars in M9 are of apparent magnitude 13.5, making them visible in moderately sized telescopes. There have been 13 variable stars found in M9.

Nearby, at about 80' to the northeast of M9 is the dimmer globular cluster NGC 6356, while at about 80' to the southeast is the globular NGC 6342.

Messier 9, from 2MASS

External links

References

  1. ^ a b c d "SIMBAD Astronomical Database". Results for NGC 6333. http://simbad.u-strasbg.fr/Simbad. Retrieved 2006-11-15. 

Coordinates: Sky map 17h 19m 11.78s, −18° 30′ 58.5″



Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

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”