NGC 7078: Difference between revisions
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The ''Great Pegasus Cluster'' ranks among the most beautiful objects of its class and is comparable with [[M 2]], [[M 3]] or | The ''Great Pegasus Cluster'' ranks among the most beautiful objects of its class and is comparable with [[M 2]], [[M 3]] or | ||
[[M 92]]. The brightest stars of M 15 reach an apparent magnitude of 12<sup>m</sup>.6, so that first hints on single stars might be observed with 3" telescopes. With naked eye one has to carefully watch the surroundings as there is a star with apparent magnitude of 6<sup>m</sup> | [[M 92]]. The brightest stars of M 15 reach an apparent magnitude of 12<sup>m</sup>.6, so that first hints on single stars might be observed with 3" telescopes. With naked eye one has to carefully watch the surroundings as there is a star with apparent magnitude of 6<sup>m</sup> nearby. The nucleus seems to be eliptical in the north-east to south-west direction and has a diameter of about two or three arc minutes. | ||
=== Location === | === Location === | ||
Revision as of 13:12, 10 December 2007
NGC 7078[1][2], also known as M 15 or Great Pegasus Cluster, is a globular cluster located in the constellation Pegasus. It was discovered on the 7th September 1746 by Jean-Dominique Maraldi.
| NGC 7078 | |
|---|---|
| Observation data: 2000.0 epoch | |
| Constellation | Pegasus |
| Right ascension | 21h30.0m |
| Declination | +12o10' |
| Type | Globular cluster |
| Apparent dimensions | 12.3 |
| Apparent magnitude | 6.4 |
| Other designations | Great Pegasus Cluster, M 15 |
Appearance
The Great Pegasus Cluster ranks among the most beautiful objects of its class and is comparable with M 2, M 3 or M 92. The brightest stars of M 15 reach an apparent magnitude of 12m.6, so that first hints on single stars might be observed with 3" telescopes. With naked eye one has to carefully watch the surroundings as there is a star with apparent magnitude of 6m nearby. The nucleus seems to be eliptical in the north-east to south-west direction and has a diameter of about two or three arc minutes.
Location
Scientific research
References
- ↑ Hirshfeld, Alan, and Roger W. Sinnott, eds., Sky Catalogue 2000.0, Vol.2, Cambridge, Massachusetts: Sky Publishing Corp. and Cambridge University Press, 1985. (3098,238)
- ↑ NGC 2000.0, The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J.L.E. Dreyer Sinnott, R.W. (edited by) <Sky Publishing Corporation and Cambridge University Press (1988)>