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NGC 6724 (15,466 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




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NGC 6724

NGC 6724, h 2024, GC 4451

RA: 18h 56m 45s
Dec: +10° 26′ 47″

Con: Aquila
Ch: MSA:1246, U2:206, SA:16

Ref: DAML02

(reference key)

Type: open cluster

Mag: B=?, V=10

Size: 3′
PA: ?

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

NGC 6724 is described by JH simply as "A cluster discovered with the 7-feet (sic) equatorial, Sept 5, 1828." He puts a plus/minus sign on the RA which he lists to only a full minute of time, though the Dec is given to his usual precision of an arcsec.

About five arcmin northwest of his place is a small (5 arcmin by 3 arcmin) clump of stars, a dozen of which are bright enough to be in GSC. Given the paucity of information, though, the object could also be NGC 6709, a much richer cluster 10 minutes west at the same declination. Until further data can be dug out of JH's original observing notes (assuming there is more data), I am going to adopt the poorer clump of stars for this number -- though with a colon to flag the uncertainty inherent in the observation.

Historical observations

Webb, T.W. (1893)

In the 5th edition of Webb's Celestial Objects for Common Telescopes it is described as "NGC 6724 (h 2024) Interesting field."

Published comments

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a nonexistent object. Their coded description reads NO CL DC.

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