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The Helix Nebula (also known as NGC 7293 or Caldwell 63) is a planetary nebula (PN) located in the constellation Aquarius. Discovered by Karl Ludwig Harding , most likely before 1824, this object is one of the closest of all the bright planetary nebulae to Earth. [ 3 ]
Helix Nebula: Planetary Nebula: 0.522 Aquarius: 7.3 C64 NGC 2362: Tau Canis Majoris Cluster: Open Cluster and Nebula: 5.1 Canis Major: 4.1 C65 NGC 253: Sculptor Galaxy: Spiral Galaxy: 9,800 Sculptor: 7.1 C66 NGC 5694 Globular Cluster: 113 Hydra: 10.2 C67 NGC 1097 Barred Spiral Galaxy: 47,000 Fornax: 9.3 C68 NGC 6729: R CrA Nebula: Nebula: 0.424 ...
Cometary knots in the Helix Nebula. Cometary knots, also referred as globules, are structures observed in several nearby planetary nebulae (PNe), including the Helix Nebula (NGC 7293), the Ring Nebula (NGC 6720), the Dumbbell Nebula (NGC 6853), the Eskimo Nebula (NGC 2392), and the Retina Nebula (IC 4406).
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Cat's Eye Nebula: 3.5 × 10 15 meters 2.5 × 10 15 meters Hourglass Nebula — 3 × 10 15 meters Blinking Nebula — 4.5 × 10 15 meters Light year: 9.5 × 10 15 meters 10 16 meters Rotten Egg Nebula — 1 light year 1.4 × 10 16 meters Ring Nebula: 1.3 × 10 16 meters 2 light years 1.7 × 10 16 meters Oort cloud: 1.5 × 10 15 meters 2 light ...
Cat's Eye Nebula: NGC 6543: 1786 3.3 ± 0.9 9.8B Draco: Little Ghost Nebula: NGC 6369: 1800 (prior to) 2 ± 3 9.9 Ophiuchus: Medusa Nebula: Abell 21 1955 1.0 (approx.) 15.99 Gemini: Jewel Bug Nebula: NGC 7027: 1878 3.0 (approx.) 10 Cygnus: Helix Nebula: NGC 7293: 1824 0.68 +0.15 −0.08: 7.6 Aquarius: Little Dumbbell Nebula: M76: NGC 650, NGC ...
English: The Helix Nebula: a Gaseous Envelope Expelled By a Dying Star About the Object. Object Name: Helix Nebula, NGC 7293 or "The Eye of God"
size_v – the apparent dimensions of the nebula; constellation – the constellation containing the nebula. Should be wikilinked. radius_ly (optional) – the radius of the nebula, in light years; radius_pc (optional) – the radius of the nebula, in parsecs; dimensions (optional) - the real dimensions of the nebula if the radius isn't ...