NGC 6645

NGC 6645
Gözlem verisi (Dönem J2000)
TakımyıldızYay
Sağ açıklık (α)18sa 32d 37,9s[1]
Dik açıklık (δ)-16° 53′ 02″[1]
SınıflandırmaIII 1 m[2]
Açısal boyut ()15'[2]
Görünür büyüklük (V)8,5[2]
Körlenme (FHD E(B-V))0,36[3]
Özellikler
Uzaklık4.061[3] Iy (1.245[3] pc)
Keşif
William Herschel (1786)
Katalog belirtmeleri
NGC 6645, OCL 48
  Wikimedia Commons'ta ilgili ortam
Ayrıca bakınız: Açık yıldız kümesi, Liste

NGC 6645, Yeni Genel Katalog'da yer alan bir açık yıldız kümesidir. Gökyüzünde Yay takımyıldızı yönünde yaklaşık olarak 4.061 ışık yılı uzaklıkta bulunur. İngiliz astronom William Herschel tarafından 1786 yılında 47,5 cm (18,7 inç) çaplı aynalı tip bir teleskopla keşfedilmiştir.[4]

Kaynakça

  1. ^ a b "NASA/IPAC Dış Galaksi Veritabanı". NGC 6645 nesnesi için NED sonuçları (İngilizce). Erişim tarihi: 18 Mart 2011. 
  2. ^ a b c "SEDS". NGC 6645 için gözden geçirilmiş NGC verileri (İngilizce). Erişim tarihi: 18 Mart 2011. 
  3. ^ a b c "WEBDA page for open cluster NGC 6645" (İngilizce). 10 Mart 2016 tarihinde kaynağından arşivlendi. Erişim tarihi: 29 Haziran 2012. 
  4. ^ "NGC/IC Proje Veritabanı". NGC 6645 (İngilizce). 21 Mayıs 2016 tarihinde kaynağından arşivlendi. Erişim tarihi: 18 Mart 2011. 

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