PGC 34816, 2MASX J11213813+0254119, Z 39-142, SDSS J112138+025411.4
NGC 3647 is a small elliptical galaxy in the Leo constellation.[1] The galaxy was first discovered on March 22, 1865 by Albert Marth who was a German astronomer.[2] It is approximately 747 million light-years away.[3] Due to its close proximity to five other elliptical galaxies, there was a bit of confusion for Marth to identify which object is NGC 3647.[2]
According to SIMBAD, it is identified as PGC 34816.[4] But in HyperLeda and by NASA/IPAC databases, NGC 3647 is identified as PGC 34815.[3] The correct designation for this article, according sources from wikidata is PGC 34816. There is no evidence whether this galaxy has an active nucleus or not.
^"NGC 3647 - Elliptical Galaxy in Leo | TheSkyLive.com". theskylive.com. Retrieved 2024-04-16.
^ ab"New General Catalog Objects: NGC 3600 - 3649". cseligman.com. Retrieved 2024-04-16.
^ ab"Your NED Search Results". ned.ipac.caltech.edu. Retrieved 2024-04-16.
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Bibcode:2017PrGA..128..697G. doi:10.1016/j.pgeola.2017.07.006. hdl:20.500.12128/3647. Colin Barras (Sep 9, 2017). "Footprints hint that humans are from Europe"...
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