NGC 225 is an open cluster in the constellation Cassiopeia. It is located roughly 2,200 light-years from Earth. It is about 100 to 150 million years old.[2]
The binary fraction, or the fraction of stars that are multiple stars, is 0.52.[2]
At the 2022 Eldorado Star Party amateur astronomer Will Young, a member of the Astronomical Society of South East Texas, dubbed this open cluster to feature the “Halloween Cat” asterism. A subgroup of brighter stars in this cluster appear to delineate a cat with forward facing eyes, arched back, and raised tail.
^ abc"NGC 225". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2006-05-29.
^ abcYalyalieva, L.; Carraro, G.; Glushkova, E.; Munari, U.; Ochner, P. (2022). "The young Galactic cluster NGC 225: Binary stars' content and total mass estimate". Monthly Notices of the Royal Astronomical Society. arXiv:2204.12558. doi:10.1093/mnras/stac1199.
^R. W. Sinnott, ed. (1988). The Complete New General Catalogue and Index Catalogue of Nebulae and Star Clusters by J. L. E. Dreyer. Sky Publishing Corporation and Cambridge University Press. ISBN 978-0-933346-51-2.
NGC225 is an open cluster in the constellation Cassiopeia. It is located roughly 2,200 light-years from Earth. It is about 100 to 150 million years old...
photometric search for peculiar stars in open clusters. V. NGC 2099, NGC 3114, NGC 6204, NGC 6705 and NGC 6756". Astronomy and Astrophysics. 412 (3): 721–725...
NGC 3324 is an open cluster in the southern constellation Carina, located northwest of the Carina Nebula (NGC 3372) at a distance of 9,100 ly (2,800 pc)...
of Stars (abbreviated NGC) is an astronomical catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects...
T. G. (January 1976). "NGC 2204: an old open cluster in the halo". Monthly Notices of the Royal Astronomical Society. 174: 225–239. Bibcode:1976MNRAS...
galaxies. List of NGC objects (1–1000) List of NGC objects (1001–2000) List of NGC objects (2001–3000) List of NGC objects (3001–4000) List of NGC objects (4001–5000)...
confused with NGC 246, which is also nicknamed the "Skull Nebula." The complex has the following New General Catalogue (NGC) designations: NGC 2237 – Part...
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Embedded within Messier 24. Associated with Messier 17. Associated with NGC 6820. Embedded within the Iris Nebula. There are some errors in Collinder's...
NGC 300 (also known as Caldwell 70 or the Sculptor Pinwheel Galaxy) is a spiral galaxy in the constellation Sculptor. It is one of the closest galaxies...
II Program. The catalogue contains 400 objects. All objects are from the NGC. All objects are visible in mid northern latitudes, since they were all observed...
NGC 457 (also designated Caldwell 13, and known as the Dragonfly Cluster, E.T. Cluster, Owl Cluster, Kachina Doll Cluster or Phi Cassiopeiae Cluster)...
NGC 6820 is a small reflection nebula near the open cluster NGC 6823 in Vulpecula. The reflection nebula and cluster are embedded in a large faint emission...
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than stars found in spiral galaxies. 3C 244.1 M49 (NGC 4472) M59 (NGC 4621) M60 (NGC 4649) M87 (NGC 4486), whose supermassive black hole was the first...
NGC 206 is a bright star cloud in the Andromeda Galaxy, and the brightest star cloud in Andromeda when viewed from Earth. NGC 206 is the richest and most...
The Ring Nebula (also catalogued as Messier 57, M57 and NGC 6720) is a planetary nebula in the northern constellation of Lyra.[C] Such a nebula is formed...
NGC 55, also known as the String of Pearls Galaxy, is a Magellanic type barred spiral galaxy located about 6.5 million light-years away in the constellation...
NGC 185 (also known as Caldwell 18) is a dwarf spheroidal galaxy located 2.08 million light-years from Earth, appearing in the constellation Cassiopeia...
NGC 2787, a barred lenticular galaxy NGC 3115 NGC 3632 NGC 4608, a barred lenticular galaxy about 56 million light years away in Virgo NGC 5866 NGC 1533...
NGC 2359 (also known as Thor's Helmet) is an emission nebula in the constellation Canis Major. The nebula is approximately 3,670 parsecs (11.96 thousand...
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