TheTrumpler class of this cluster is II3p, indicating, "a detached cluster with but little central condensation, composed of moderately bright and faint stars numbering less than 50."[7] The brightest cluster member is MQ Triangulum Australis, with a magnitude of 7.1.[2] This is ablue straggler with astellar classification of B1Ve.[8] NGC 6025 is a moderately young cluster with an age between 40 and 69 Myr.[3] The cluster ismetal-rich compared to the Sun; more so than theHyades cluster.[9] Sevenspectroscopic binary star systems have been identified.[10] Only oneblue straggler has been found among the members, along with twoBe candidates.[3]
NGC 6025 straddles theIAU boundary between the constellations Norma and Triangulum Australe, as determined byDelporte. The northern part of the open cluster in Norma, the southern part in Triangulum Australe.
^Grosso, M.; Levato, H. (October 2011). "Spectral morphology and rotation in the open cluster NGC 6025".Revista Mexicana de Astronomía y Astrofísica.47:255–259.Bibcode:2011RMxAA..47..255G.
^Cameron, L. M. (June 1985). "Metallicities and distances of galactic clusters as determined from UBV-data. II. The metallicities and distances of 38 open clusters".Astronomy and Astrophysics.147:39–46.Bibcode:1985A&A...147...39C.
^Levato, H.; et al. (August 2004). Allen, Christine; Scarfe, Colin (eds.).Spectroscopic binaries in southern open clusters. The Environment and Evolution of Double and Multiple Stars, Proceedings of IAU Colloquium 191, held 3-7 February, 2002 in Merida, Yucatan, Mexico. Revista Mexicana de Astronomía y Astrofísica (Serie de Conferencias). Vol. 21. pp. 141–142.Bibcode:2004RMxAC..21..141L.
Paunzen, E.; et al. (April 2014). "Photoelectric search for peculiar stars in open clusters. XV. Feinstein 1, NGC 2168, NGC 2323, NGC 2437, NGC 2547, NGC 4103, NGC 6025, NGC 6633, Stock 2, and Trumpler 2".Astronomy & Astrophysics.564. id. A42.arXiv:1403.3538.Bibcode:2014A&A...564A..42P.doi:10.1051/0004-6361/201423521.
Kilambi, G. C. (December 1975). "Intermediate- and wide-band photometry of NGC 6025".Publications of the Astronomical Society of the Pacific.87:975–981.Bibcode:1975PASP...87..975K.doi:10.1086/129883.
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