Messier 62
| Messier 62 | |
|---|---|
| Data pengamatan (J2000 epos) | |
| Kelas | IV[1] |
| Rasi bintang | Ophiuchus |
| Asensio rekta | 17j 01m 12.60d[2] |
| Deklinasi | –30° 06′ 44.5″[2] |
| Jarak | 222 kly (68 kpc)[3] |
| Magnitudo tampak (V) | +7.39[2] |
| Dimensi tampak (V) | 15′.0 |
| Karakteristik fisik | |
| Massa | 1,22×106[3] M☉ |
| Radius | 49 tc[4] |
| Metalisitas | = –1.02[5] dex |
| Perkiraan umur | 11.78 Gyr[5] |
| Nama lain | NGC 6266, GCl 51[2] |
Messier 62 (juga dikenal sebagai M62 atau NGC 6266) adalah sebuah gugus bola di rasi bintang Ophiuchus. Messier 62 ditemukan pada tahun 1771 oleh Charles Messier.
Messier 62 berjarak sekitar 22.500 tahun cahaya dari Bumi dan berukuran sekitar 100 tahun cahaya. Dari studi yang dilakukan pada tahun 1970 diketahui bahwa Messier 62 berisi 89 bintang variabel, banyak dari mereka berjenis Lyrae RR. Gugus ini juga berisi beberapa sumber sinar-X, dianggap sistem bintang biner, serta pulsar milidetik dalam sistem biner.

Referensi
- ^ Shapley, Harlow; Sawyer, Helen B. (1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin (849): 11–14, Bibcode:1927BHarO.849...11S.
- ^ a b c d "SIMBAD Astronomical Database". Results for NGC 6266. Diakses tanggal 2006-11-17.
- ^ a b Boyles, J.; et al. (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.
- ^ distance × sin( diameter_angle / 2 ) = 49 ly. radius
- ^ a b Forbes, Duncan A.; Bridges, Terry (2010), "Accreted versus in situ Milky Way globular clusters", Monthly Notices of the Royal Astronomical Society, 404 (3): 1203–1214, arXiv:1001.4289, Bibcode:2010MNRAS.404.1203F, doi:10.1111/j.1365-2966.2010.16373.x.
Pranala luar
- Messier 62, SEDS Messier pages
- Messier 62, Galactic Globular Clusters Database page
- M62 on willig.net
- Messier 62 di WikiSky: DSS2, SDSS, GALEX, IRAS, Hidrogen α, X-Ray, Astrophoto, Peta langit, Artikel dan gambar
Koordinat:
17h 01m 12.60s, −30° 06′ 44.5″
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