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NGC 246

NGC 246
Nebula
Gambar infra merah Teleskop luar angkasa Spitzer dari NGC 246.
Credit: NASA/JPL.
Data pengamatan: J2000 epos
Asensio rekta 00j 47m 03.338d[1]
Deklinasi -11° 52′ 18.94″[1]
Jarak1,600 tahun cahaya ly
Magnitudo semu (V)8[2] / 11.8 (bintang tengah)[1]
Dimensi semu (V)3.8′[2]
Rasi bintangCetus
Ciri-ciri fisik
Jari-jari2-3 tahun cahaya[3] ly
SebutanNebula Tengkorak,[4] Nebula Pac-Man,[5] Caldwell 56, PK 118-74.1, GC 131, H 5.25, h 56, PN G118.8-74.7
Lihat pula: Daftar nebula

NGC 246 (juga dikenal sebagai Nebula Tengkorak,[4] Nebula Pac-Man,[5] Cincin Cetus, atau Caldwell 56) adalah nebula planeter di rasi bintang Cetus. Nebula dan bintang-bintang yang terkait dengan nebula ini tercantum dalam beberapa katalog, seperti yang dirangkum oleh database SIMBAD.[1] Nebula ini berjarak sekitar 1.600 tahun cahaya.[6] Bintang katai putih pada pusat nebula, HIP 3678, bermagnitudo 12.[6]

Di antara beberapa astronom amatir, NGC 246 dikenal sebagai "Nebula Pac-Man" karena susunan bintang yang berada di pusat nebula dan bintang terhampar di sekitarnya.[5]

Galeri

  • NGC 246 diperoleh dengan menggunakan Teleskop Schulman 0.8m di puncak Gunung Lemmon, AZ. Gambar ini merupakan gambar berwarna (visual) penuh.
    NGC 246 diperoleh dengan menggunakan Teleskop Schulman 0.8m di puncak Gunung Lemmon, AZ. Gambar ini merupakan gambar berwarna (visual) penuh.

Referensi

  1. ^ a b c d "SIMBAD Astronomical Database". Results for NGC 246. Diakses tanggal 2006-12-22. 
  2. ^ a b "SEDS NGC Catalog Online". Results for NGC 246. Diakses tanggal 2010-11-29. 
  3. ^ "NGC 246". Astronomy: Stars & Planets. Diakses tanggal 2013-01-07. 
  4. ^ a b "The Night Sky", Astronomy Now, Oct 2008.
  5. ^ a b c David H. Levy, Deep Sky Objects, Prometheus Books, 2005, ISBN 1-59102-361-0, p 129.
  6. ^ a b Stephen James O'Meara, The Caldwell Objects, Sky Publishing Corporation, ISBN 0-933346-97-2, p 223.

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