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Entire DOCdb database of 18,816 objects.

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NGC 261 (509 of 18,816)

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NGC 261

NGC 261, ESO 29-12, LHA 115-N 12A, LI-SMC 36, OGLE-CL SMC 34, h 2349, GC 146

RA: 00h 46m 32.96s
Dec: −73° 05′ 55.3″

Con: Tucana
Ch: MSA:502, U2:460, SA:24

Ref: SIMBAD

(reference key)

Type: bright nebula (HII region)

Mag: B=?, V=?

Size: ?
PA: ?

Historical observations

John Herschel (1847) Cape Observations

Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "very faint, round, gradually brighter in the middle, 2' across, resolvable." He next described it as "pretty bright, round, 60 arcseconds. Has a star 13th mag in centre. Occurs in a field illuminated by the Nubecular Minor and many stars." His final observation was recorded as "pretty faint, round, 90 arcseconds." Herschel notes that this could be either Dunlop 3, 4 or 21.

Published comments

Henize (1956)

Henize (Catalogues of Hydrogen Alpha Emission Stars and Nebulae in the Magellanic Clouds, Astrophysical Journal Supplement 2, 1956, p315) notes that his nebula LH N 115-12A is "NGC 261 = Nail 25." The nebula is ring-shaped and measures 1.9' across. It has smooth edges and shows no structural details.

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a diffuse nebula in the SMC.

Modern observations

Brian Skiff

15cm - sim to N249, but sl smlr although about same brtness overall. neb sim enhanced as N249, 1' diam, and w/wk even concen. cl smlr, not so many *s. BS, 9Nov1993, LCO.

Contemporary observations

Auke Slotegraaf

1997 October 09

11x80: 1997-10-09, 02:30, Jonkershoek, seeing 3, transparency 3, darkness 3 "Not found."

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