17h 37m 36.15s, −03° 14′ 45.3″Messier 14
Page Module:Infobox/styles.css has no content.
| Messier 14 | |
|---|---|
| Lua error in package.lua at line 80: module 'Module:InfoboxImage/data' not found. Globular cluster Messier 14 in Ophiuchus | |
| Observation data (J2000 epoch) | |
| Class | VIII[1] |
| Constellation | Ophiuchus |
| Right ascension | Template:RA[2] |
| Declination | Template:DEC[2] |
| Distance | 30.3 kly (9.3 kpc)[3] |
| Apparent magnitude (V) | 7.6[4] |
| Apparent dimensions (V) | 11.0Template:Prime |
| Physical characteristics | |
| Mass | 1.04×106[3] M☉ |
| Radius | 50 ly[5] |
| Metallicity | [Fe/H] = –1.28[3] dex |
| Other designations | NGC 6402[2] |
Messier 14 (also known as M14 or NGC 6402) is a globular cluster of stars in the constellation Ophiuchus. It was discovered by Charles Messier in 1764.
At a distance of about 30,000 light-years, M14 contains several hundred thousand stars. At an apparent magnitude of +7.6 it can be easily observed with binoculars. Medium-sized telescopes will show some hint of the individual stars of which the brightest is of magnitude +14.
The total luminosity of M14 is in the order of 400,000 times that of the Sun corresponding to an absolute magnitude of −9.12. The shape of the cluster is decidedly elongated. M14 is about 100 light-years across.[6]
A total of 70 variable stars are known in M14, many of the W Virginis variety common in globular clusters. In 1938, a nova appeared, although this was not discovered until photographic plates from that time were studied in 1964. It is estimated that the nova reached a maximum brightness of magnitude +9.2, over five times brighter than the brightest 'normal' star in the cluster.
Slightly over 3° southwest of M14 lies the faint globular cluster NGC 6366.
Gallery
-
Messier 14 with amateur telescope -
Map showing location of Messier 14
See also
References
- ^ Page Module:Citation/CS1/styles.css has no content.Shapley, Harlow; Sawyer, Helen B. (August 1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin, 849 (849): 11–14, Bibcode:1927BHarO.849...11S.
- ^ a b c
Page Module:Citation/CS1/styles.css has no content."NGC 6402". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2006-11-15.
{{cite web}}: Invalid|mode=Script error: No such module "Citation mode".(help) - ^ a b c Page Module:Citation/CS1/styles.css has no content.Boyles, J.; et al. (November 2011), "Young Radio Pulsars in Galactic Globular Clusters", The Astrophysical Journal, 742 (1): 51, arXiv:1108.4402, Bibcode:2011ApJ...742...51B, doi:10.1088/0004-637X/742/1/51, S2CID 118649860.
- ^ Page Module:Citation/CS1/styles.css has no content."Messier 14". SEDS Messier Catalog. Retrieved 21 July 2024.
- ^ distance × sin( diameter_angle / 2 ) = 50 ly radius
- ^ Page Module:Citation/CS1/styles.css has no content."Messier 14 | Messier Objects". 31 March 2015. Retrieved 2020-04-14.
External links
Page Module:Side box/styles.css has no content.Page Template:Sister project/styles.css has no content.
- SEDS Messier pages on M14
- M14, Galactic Globular Clusters Database page
- Template:APOD – one of the two being M14
- Template:WikiSky
Lua error in mw.title.lua at line 404: bad argument #2 to 'title.new' (unrecognized namespace name 'Portal'). Lua error in package.lua at line 80: module 'Module:Navbox/configuration' not found. Lua error in package.lua at line 80: module 'Module:Navbox/configuration' not found. Template:Ngc65Template:Constellation navbox
