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Type: open cluster
Mag: B=12.09, V=11.85
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Discovered by James Dunlop from Paramatta, New South Wales, and included as No. 102 in his catalogue of 1827. Using a 9-inch f/12 telescope, he described it as "A faint ill-defined nebula, perhaps 3' diameter."
Observed by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "B, R, gbM, 90 arcseconds; the 3rd of a group of 6." On a second occassion he called it "vB, R; the 3rd of a group of 7. Plate IV, fig.9."
The seven objects in this group are NGC 2046, NGC 2047, NGC 2058, NGC 2057, NGC 2059, NGC 2065 and NGC 2066.
Recorded in "Observations of the Southern Nebulae made with the Great Melbourne Telescope".
"glob cluster; fiarly condensed; LMC."
Bailey, S.I. (1908) A catalogue of bright stars and nebulae. Ann.Harv.Coll.Obs., 60(8), 199.
Hinks, A. R. (1911) On the galactic distribution of gaseous nebulae and of star clusters. MNRAS, 71(8), 693-701.
List 4: "NGC numbers of nebulae probably gaseous, not exceedingly extended" p698
includes NGC 2058, with a footnote: "Classification doubtful. Perhaps globular cluster."
Harvard Circular 271, "The Magellanic Clouds, IV."
(p.5/6) "Of the scores of open clusters in the Large Magellanic Cloud, six of the brightest and most compact have been measured for the present survey. NGC 1856 may be a globular cluster."
NGC 1854 (1855), apparent magnitude 7.1
NGC 1856, apparent magnitude 7.0
NGC 1986, apparent magnitude 8.0
NGC 2058, apparent magnitude 7.7
NGC 2065, apparent magnitude 7.8
NGC 2100, apparent magnitude 6.3
("A Catalogue of Clusters in the Large Magellanic Cloud", Irish Astronomical Journal, Vol. 6, 1963) give a diameter of 1.9' and remark "bright condensed centre, outer resolved."
Van den Bergh and Hagen ("UBV photometry of star clusters in the Magellanic Clouds", Astronomical Journal, Vol. 73, 1968) find that the integrated V magnitude through a 60'' diaphragm is 11.85. They classify it as an open cluster.
The RNGC (Sulentic and Tifft 1973) notes that this is a 12.0 mag open cluster in the LMC.
15cm - br cl part res @ 140x/195x. m13,13.5 *s on W side. diam 1'.2 w/mod concen, reaches 2/3 way to nearer of the *s W. BS, 19Nov1993, LCO.
The Messier objects
The Bennett objects
The Caldwell list
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