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| NGC 6541 | |
|---|---|
.jpg) NGC 6541, imaged by the Hubble Space Telescope | |
| Observation data (J2000 epoch) | |
| Class | III[1] |
| Constellation | Corona Australis |
| Right ascension | 18h 08m 02.36s[2] |
| Declination | –43° 42′ 53.6″[2] |
| Distance | 22.8 kly (7.0 kpc)[3] |
| Apparent magnitude (V) | 6.3 |
| Apparent dimensions (V) | 15′ |
| Physical characteristics | |
| Absolute magnitude | −8.52 |
| Mass | 5.72×105[4] M☉ |
| Metallicity | = –1.53[5] dex |
| Estimated age | 12.93 Gyr[5] |
| Other designations | Caldwell 78 |
![{\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/4c0821bd80891e071c08e7c7ee8e022baedf522c)
NGC 6541 (also known as Caldwell 78) is a globular cluster in the southern constellation of Corona Australis. It is estimated to be around 14 billion years old.[6]
The globular cluster was discovered by Niccolò Cacciatore at the Palermo Astronomical Observatory, Sicily, on March 19, 1826. It was independently found by James Dunlop on July 3, 1826.
The cluster is relatively small, having just 94 blue straggler stars.[7]
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mnras404_3_1203was invoked but never defined (see the help page). - ^ O'Meara, Stephen James (2011). Deep-Sky Companions: The Secret Deep. Cambridge, United Kingdom: Cambridge University Press. p. 322. ISBN 978-0521198769.
- ^ Raso, S.; Ferraro, F. R.; Dalessandro, E.; Lanzoni, B.; Nardiello, D.; Bellini, A.; Vesperini, E. (2017), "The "UV-route" to Search for Blue Straggler Stars in Globular Clusters: First Results from theHSTUV Legacy Survey", The Astrophysical Journal, 839 (1): 64, arXiv:1704.01453, Bibcode:2017ApJ...839...64R, doi:10.3847/1538-4357/aa6891, S2CID 118939669