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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. [1] Members of stellar associations and moving groups share similar kinematic properties, as well as similar ages and chemical composition. The list (below) is sorted by the distance to the Solar System.
Auner — (for example: open star cluster Auner 1 at 7:04:16 / -19°45'00" in Canis Major) (Auner 1 is the cluster which was "lost" in the disturbing ghost reflection of nearby Alpha Canis Majoris, aka Sirius, this during the Palomar Observatory Sky Survey, POSS)
In 1999, cluster RDCS J0849+4452 (RX J0849+4452, RXJ0848.9+4452) was found at z=1.261 [43] [46] In 1995 and 2001, the cluster around 3C 294 was announced, at z=1.786 [65] In 1992, observations of the field of cluster Cl 0939+4713 found what appears to be a background cluster near a quasar, also in the background. The quasar was measured at z=2. ...
A 1.0 m (39 in) Cassegrain reflector built by Rademakers Aandrijvingen B.V. of Amsterdam saw first light in 1961. [11] The primary and secondary mirrors were figured by Don Hendrix of Mount Wilson Observatory. It was automated in the 1990s and is now used by students at UNAM in Mexico City. [12]
Pages in category "Astronomical observatories in Mexico" The following 5 pages are in this category, out of 5 total. This list may not reflect recent changes. G.
The Abell catalogue is a catalogue of approximately 4,000 galaxy clusters with at least 30 members, almost complete to a redshift of z = 0.2. It was originally compiled by the American astronomer George O. Abell in 1958 using plates from POSS , and extended to the southern hemisphere by Abell, Corwin and Olowin in 1987.
The following is a list of NGC objects, that is objects listed in the New General Catalogue (NGC). It is one of the largest comprehensive astronomical catalogues for deep sky objects such as star clusters, nebulae, and galaxies. List of NGC objects (1–1000) List of NGC objects (1001–2000) List of NGC objects (2001–3000)
List of most massive open clusters Cluster name Mass (M ☉); (Sun = 1) Galaxy Notes NGC 1569-B (4.4 ± 1.1) × 10 5 [13] NGC 1569: NGC 1569-A (3.3 ± 0.5) × 10 5 [14] NGC 1569: RMC 136: 8.7 × 10 4 [15] Large Magellanic Cloud: Contains the most massive known star R136a1 at 196 +34 −27 M ☉. [16] NGC 346: 5 × 10 4 [17] Small Magellanic ...