Messier 70

Messier 70 (dikenal juga sebagai M70 atau NGC 6681) adalah gugus bola di rasi bintang Sagittarius. Objek ini pertama kali ditemukan oleh Charles Messier pada 17…

Messier 70
Messier 70
M70 dari Hubble Space Telescope; 3.32′
Kredit: NASA/STScI/WikiSky
Data pengamatan (J2000 epos)
KelasV[1]
Rasi bintangSagittarius
Asensio rekta 18j 43m 12.76d[2]
Deklinasi –32° 17′ 31.6″[3]
Jarak29.4 ribu tc[4]
Magnitudo tampak (V)+9.06[3]
Dimensi tampak (V)8′.0
Karakteristik fisik
Massa1,79×105[4] M
Radius34 tc[5]
Metalisitas = –1.35[6] dex
Perkiraan umur12.80  Miliar tahun[6]
Nama lainM70, NGC 6681, GCl 101[3]
Lihat pula: Gugus bola, Daftar gugus bola

Messier 70 (dikenal juga sebagai M70 atau NGC 6681) adalah gugus bola di rasi bintang Sagittarius. Objek ini pertama kali ditemukan oleh Charles Messier pada 1780.

M70 berjarak sekitar 29,300 tahun cahaya dari bumi dan berada di dekat pusat galaksi.

Galeri

Referensi

  1. ^ Shapley, Harlow; Sawyer, Helen B. (1927), "A Classification of Globular Clusters", Harvard College Observatory Bulletin (849): 11–14, Bibcode:1927BHarO.849...11S. {{citation}}:
  2. ^ Goldsbury, Ryan; et al. (2010), "The ACS Survey of Galactic Globular Clusters. X. New Determinations of Centers for 65 Clusters", The Astronomical Journal, 140 (6): 1830–1837, arXiv:1008.2755, Bibcode:2010AJ....140.1830G, doi:10.1088/0004-6256/140/6/1830. {{citation}}:
  3. ^ a b c "SIMBAD Astronomical Object Database". Results for NGC 6681. Diakses tanggal 2006-11-17.
  4. ^ 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. {{citation}}:
  5. ^ distance × sin( diameter_angle / 2 ) = 34 ly. radius
  6. ^ 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. {{citation}}:
  7. ^ "Tight and Bright". ESA/Hubble Picture of the Week. Diakses tanggal 13 April 2012.

Pranala luar

Koordinat: Peta langit 18h 43m 12.64s, −32° 17′ 30.8″

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