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NGC 739 (1,405 of 18,816)

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NGC 739

NGC 739, LEDA 7312, MCG+05-05-030, GC 5199

RA: 01h 56m 54.69s
Dec: +33° 16′ 0.1″

Con: Triangulum
Ch: MSA:123, U2:92, SA:4

Ref: SIMBAD

(reference key)

Type: galaxy, S0a

Mag: B=14.8, V=?

Size: 0.512′ x 0.512′
PA: ?

History and Accurate Positions for the NGC/IC Objects (Corwin 2004)

NGC 739. Ralph Copeland found this object near NGC 750 and N751 on 9 January 1874 using Lord Rosse's 72-inch telescope. He measured the distance and position angle from NGC 750; these point exactly at the galaxy he saw. His measures of three stars around N739 are also exact, giving further confirmation to the identification.

In his description of the object, however, he mistakenly has N739 "south-preceding" N750, rather than "north-preceding." When Dreyer reduced a position for the object during preparation of Lord Rosse's observations for publication in 1880, he too made a mistake, placing the position of N739 too far south by 2 arcmin. Thus, the identity with the galaxy has been missed by most of the modern catalogues.

Published comments

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 15.0 mag galaxy. Their coded description reads R,BM,ALMSTEL.

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