NGC 265
Open star cluster in the constellation Tucana
title: "NGC 265" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["open-clusters", "small-magellanic-cloud", "tucana", "ngc-objects", "astronomical-objects-discovered-in-1834"] description: "Open star cluster in the constellation Tucana" topic_path: "general/open-clusters" source: "https://en.wikipedia.org/wiki/NGC_265" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0
::summary Open star cluster in the constellation Tucana ::
::data[format=table title="Infobox open cluster"]
| Field | Value |
|---|---|
| image | [[Image:NGC265.jpg |
| caption | A Hubble Space Telescope (HST) image of NGC 265. |
| Credit: HST/NASA/ESA. | |
| name | NGC 265 |
| epoch | J2000 |
| constellation | Tucana |
| ra | |
| dec | |
| dist_ly | |
| size_v | |
| mass_msol | |
| radius_ly | 14.5 pc |
| age | Myr |
| names | Cl Lindsay 34, ESO 29-14, SMC−OGLE 39 |
| :: |
| image = [[Image:NGC265.jpg|300px]] | caption = A Hubble Space Telescope (HST) image of NGC 265. Credit: HST/NASA/ESA. | name = NGC 265 | epoch = J2000 | constellation = Tucana | ra = | dec = | dist_ly = | appmag_v = | absmag_v = | size_v = | mass_msol = | radius_ly = 14.5 pc | age = Myr | notes = | names = Cl Lindsay 34, ESO 29-14, SMC−OGLE 39
NGC 265 is an open cluster of stars in the southern constellation of Tucana. It is located in the Small Magellanic Cloud, a nearby dwarf galaxy. The cluster was discovered by English astronomer John Herschel on April 11, 1834. J. L. E. Dreyer described it as, "faint, pretty small, round", and added it as the 265th entry in his New General Catalogue.
This cluster has an angular core radius of and a physical radius of approximately 14.5 pc. It has a combined 4,200 times the mass of the Sun and is around 250 million years old. The metallicity of the cluster – what astronomers term the abundance of elements with higher atomic number than helium – is at around −0.62, or only 24% of that in the Sun. The turn-off mass for the cluster, when a star of that mass begins to evolve off the main sequence into a giant, is about 4.0 to .
References
See the Vizier VII/1B/catalog entry for NGC 265.
| work=Space Telescope Website | title=Magellanic gemstone in the southern sky [NGC 265] | url=https://www.spacetelescope.org/images/heic0603b/ | access-date=2009-03-02}}
::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::