NGC 2451
Template:Short description {{#invoke:Infobox|infobox}}Template:Template other{{#invoke:Check for unknown parameters|check|unknown=Template:Main other|preview=Page using Template:Infobox open cluster with unknown parameter "_VALUE_"|ignoreblank=y| age | alt | absmag_v | appmag_v | caption | constellation | credit | dec | dist_ly | dist_pc | epoch | galaxy | group | image | image_scale | mass_msol | name | names | notes | ra | radius_ly | size_v }} NGC 2451 is an open cluster in the Puppis constellation, probably discovered by Giovanni Battista Hodierna before 1654 and John Herschel in 1835.<ref name=Seligman>Template:Cite web</ref> In 1994, it was postulated that this was actually two open clusters that lie along the same line of sight. This was confirmed in 1996. The respective clusters are labeled NGC 2451 A and NGC 2451 B, and they are located at distances of 600 and 1,200 light-years, respectively.<ref>Template:Cite journal</ref>