Messier 12
16h 47m 14.52s, −01° 56′ 52.1″| Messier 12 | |
|---|---|
| Apparent magnitude (V) | 6.7[4] |
| Apparent dimensions (V) | 16.0′ |
| Physical characteristics | |
| Mass | 8.7×104[5] M☉ |
| Radius | 37.2 ly[NB 1] |
| Metallicity | = –1.14 Gyr[3] |
| Other designations | NGC 6218[7] |
![{\displaystyle {\begin{smallmatrix}\left[{\ce {Fe}}/{\ce {H}}\right]\end{smallmatrix}}}](https://wikimedia.org/api/rest_v1/media/math/render/svg/4c0821bd80891e071c08e7c7ee8e022baedf522c)
Messier 12 or M 12 (also designated NGC 6218) is a
M12 is roughly 3°
A study published in 2006 concluded that this cluster has an unusually low number of low-mass stars. The authors surmise that they were stripped from the cluster by passage through the relatively matter-rich plane of the Milky Way.[12]
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Messier 12 core by HST -
The Central Part of Messier 12. Credit:ESO -
Map showing the location of M12
See also
- List of Messier objects
Notes
- ^ distance × sin( diameter_angle / 2 ) = 37.2 ly radius
References
- ^ Bibcode:1927BHarO.849...11S.
- ^ S2CID 119183070.
- ^ .
- ^ "Messier 12". SEDS Messier Catalog. Archived from the original on 1 July 2022. Retrieved 27 April 2022.
- S2CID 118652005. Mass is from MPD on Table 1.
- S2CID 51825384.
- ^ "M 12". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2006-11-15.
- ^ ISBN 978-0596526856.
- ^ ISBN 978-1441968500.
- ^ ISBN 978-0521553322.
- ^ "Messier 12: Gumball Globular | Messier Objects". www.messier-objects.com. 11 March 2015. Retrieved 2015-08-17.
- ESO, February 7, 2006, archived from the originalon February 8, 2007.
External links
- Messier 12, SEDS Messier pages
- Messier 12, Galactic Globular Clusters Database page
- 'Stolen' stars article at Universe Today
- Messier 12, Amateur astrophotographer (hgg) with a Celestron 9.25"
- Messier 12 on
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