NGC 7031

NGC 7031
Gözlem verisi (Dönem J2000)
TakımyıldızKuğu
Sağ açıklık (α)21sa 07d 12,5s[1]
Dik açıklık (δ)+50° 52′ 32″[1]
TürIV 1 p[2]
Açısal boyut ()15'[2]
Görünür büyüklük (V)9,1[2]
Görünür büyüklük (B)10,01[3]
Körlenme (FHD E(B-V))0,854[4]
Özellikler
Kırmızıya kayma (z)0,000001[3]
Dikey hız ()0,2 km/sn[3]
Uzaklık2.935[4] Iy (900[4] pc)
Keşif
William Herschel (1788)
Katalog belirtmeleri
NGC 7031 • OCL 210
Ayrıca bakınız: Açık yıldız kümesi, Liste

NGC 7031, Yeni Genel Katalog'da yer alan bir açık yıldız kümesidir. Gökyüzünde Kuğu takımyıldızı yönünde yaklaşık olarak 2.935 ışık yılı uzaklıkta bulunur. İngiliz astronom William Herschel tarafından 1788 yılında 47,5 cm (18,7 inç) çaplı aynalı tip bir teleskopla keşfedilmiştir.[5]

NGC 7086 ile birlikte ikili açık yıldız kümesi oldukları düşünülmektedir.[6]

Kaynakça

  1. ^ a b "NASA/IPAC Dış Galaksi Veritabanı". NGC 7031 nesnesi için NED sonuçları (İngilizce). Erişim tarihi: 18 Mart 2011. 
  2. ^ a b c "SEDS". NGC 7031 için gözden geçirilmiş NGC verileri (İngilizce). Erişim tarihi: 18 Mart 2011. 
  3. ^ a b c "SIMBAD". NGC 7031 (İngilizce). 1 Ağustos 2020 tarihinde kaynağından arşivlendi. Erişim tarihi: 18 Mart 2011. 
  4. ^ a b c Hoag, A. A.; Johnson, H. L.; Iriarte, B.; Mitchell, R. I.; Hallam, K. L.; Sharpless, S. (1961), Photometry of stars in galactic cluster fields (İngilizce), 17, U.S. Naval Observatory, s. 344-542, Bibcode:1961PUSNO..17..343H, erişim tarihi: 27 Ağustos 2013 
  5. ^ "NGC/IC Proje Veritabanı". NGC 7031 (İngilizce). 21 Mayıs 2016 tarihinde kaynağından arşivlendi. Erişim tarihi: 18 Mart 2011. 
  6. ^ Kopchev, V. S.; Petrov, G. T. (Ekim 2008), BV photometry of a possible open star cluster pair NGC 7031/NGC 7086 (İngilizce), 329, Astronomische Nachrichten, s. 845, Bibcode:2008AN....329..845K, doi:10.1002/asna.200711009, erişim tarihi: 27 Ağustos 2013 

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