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  2. List of astronomical catalogues - Wikipedia

    en.wikipedia.org/wiki/List_of_astronomical...

    Abel (globular star clusters) Abell — Abell catalogue; Abetti — Giorgio Abetti (double stars) Abt — (for example: open star cluster Abt 1 = Biurakan 4 = Markarian 6 = Stock 7) (at 2:29.6 / +60°39' near the southwestern section of the Heart Nebula in Cassiopeia) AC — Astrographic Catalogue; A.C. — Alvan Clark (double stars)

  3. New General Catalogue - Wikipedia

    en.wikipedia.org/wiki/New_General_Catalogue

    The New General Catalogue of Nebulae and Clusters 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, including galaxies, star clusters and emission nebulae.

  4. List of nearby stellar associations and moving groups

    en.wikipedia.org/wiki/List_of_nearby_stellar...

    The regions with higher density of stars are shown; these correspond with known star clusters (Hyades and Coma Berenices) and moving groups. This is a list of nearby stellar associations and moving groups. A stellar association is a very loose star cluster, looser than an open cluster. A moving group is the remnant of such a stellar association ...

  5. NGC 2129 - Wikipedia

    en.wikipedia.org/wiki/NGC_2129

    NGC 2129 is an open cluster in the constellation Gemini. It has an angular distance of 2.5 arcminutes and is approximately 2.2 ± 0.2 kpc (~7,200 light years) from the Sun inside the Local spiral arm. [3] At that distance, the angular size of the cluster corresponds to a diameter of about 10.4 light years.

  6. NGC 869 - Wikipedia

    en.wikipedia.org/wiki/NGC_869

    NGC 869 (also known as h Persei) is an open cluster located 7460 light years away in the constellation of Perseus. [2] The cluster is about 14 million years old. [2] It is the westernmost of the Double Cluster with NGC 884.

  7. Stellar population - Wikipedia

    en.wikipedia.org/wiki/Stellar_population

    Baade observed that bluer stars were strongly associated with the spiral arms, and yellow stars dominated near the central galactic bulge and within globular star clusters. [2] Two main divisions were defined as Population I star and population II , with another newer, hypothetical division called population III added in 1978.

  8. NGC 3532 - Wikipedia

    en.wikipedia.org/wiki/NGC_3532

    The cluster lies between the constellation Crux and the larger but fainter "False Cross" asterism. The 4th-magnitude Cepheid variable star x Carinae appears near the southeast fringes, but it lies between the Sun and the cluster and is not a member of the cluster. The cluster was first catalogued by Nicolas Louis de Lacaille in 1752. [18]

  9. NGC 7209 - Wikipedia

    en.wikipedia.org/wiki/NGC_7209

    NGC 7209 is an open cluster in the constellation Lacerta.It was discovered by William Herschel on 19 October 1787. The cluster lies 3,810 light years away from Earth. It has been suggested that there is another cluster at a distance of 2,100 light years projected in front of a cluster lying at 3,800 light years away, based on the reddening of the cluster, [4] however, further photometric ...

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