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IC 2948 (8,255 of 18,816)


oc gc pln bn dn gx gxcl ast aka lost




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IC 2948

IC 2948, C 1136-632, Cl VDBH 122, Ocl 864.0, COCD 295 (contains Thackeray's Globules)

RA: 11h 39m 5s
Dec: −63° 26′ 36″

Con: Centaurus
Ch: MSA:1003, U2:450, SA:25

Ref: SIMBAD, Archinal&Hynes (2003), Corwin (2004)

(reference key)

Type: bright nebula

Mag: B=?, V=?

Size: 45′ x 40′
PA: ?

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Photos  (1)

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

IC 2948. See IC 2944.


Labelled on Millenium Star Atlas as "Running Chicken Nebula."

Historical observations

NGC/IC Dreyer (1888, 1895, 1908)

This object was discovered photographically by R.H. Frost on plates taken with the 24inch Bruce refractor at the Arequipa station of Harvard Observatory. It is described in the NGC only as "extremely, extremely large."

Published comments

Wood, H.E. (1909)

Innes, R.T.A. & Wood, H.E. (1909) Notes on southern nebulae. Transvaal Observatory Circular, No.1, 14th December 1909, p35.

"A very large nebulous region - irregular in shape, somewhat resembling a pear. The star CPD-62°2127 (lambda Cen) is involved in the nebulae at the narrow end of the pear. The stars CPD-62°, 2154 2168, 2164, 2186, 2184, 2206, and 2142 are also surrounded by the nebulosity. There aer first through the nebula breaking it up into three main portions. The brightest portion of the nebula covers about 40' in declination and 5 minutes in RA, but there are fainter extensions about 1° from the main body. The nebula was photographed with the Franklin Adams Star Camera with an exposure of 150 minutes. The photograph also revealed many dark channels and holes in the Milky Way"

Burnham's Celestial Handbook

Burnham incorrectly calls the nebulosity IC 2944; he described it as very large, faint nebulosity, diam. 60' x 35', surrounds Lambda Centauri.

Gum, C.S. (1955)

Gum, C.S. (1955) A survey of southern HII regions. Mem.RAS, 67. [1955MmRAS..67..155G]

Colin S. GumA Survey of Southern H II Regions published in the RAS Memoirs, Vol. LXVII, lists this object as Gum 42. He gives the size as 75' x 50' and the intensity, or "visibility in the particular section of the Milky Way in which the object occurs" is rated as "bright" on a scale of vf - f - mb - b - vb. He notes that it corresponds to No. 118 in Sven Cederblad's 1946 catalogue. He placed it in Class II(IV) of his classification system of nebulae; Class II contains objects "irregular in shape with associated dark matter..." and Class IV contains "fainter objects in which the emission is concentrated in a ring or in a incomplete ring." He explains this in his Notes to the catalogue: "Class II with Class IV tendency. The central portion has been photographed by Thackeray. Early type stars within the nebula are [the second column contains photographic magnitude]:

HD 101008 9.0 B3

HD 101131 7.0 B3

HD 101190 7.2 B3

HD 101191 8.4 B2

HD 101205 6.7 B2

HD 101298 7.6 B3

HD 101413 8.2 B3

HD 101436 7.5 B3

Rodgers, Campbell & Whiteoak (1960)

In the catalogue of southern emission regions by Rodgers, Campbell and Whiteoak (1960), they call RCW 62 the "main Lambda Cen nebula, which is of uneven intensity." They give its size as 80' x 80' and call it "bright."

Photo index

by Jim Lucyk: Sky&Tel. 4/78 p296, Vehrenberg's Atlas of DS Splendors (3ed) p111, Deep Sky #22 p7, Astronomy mag. 5/88 p100.

Contemporary observations

Auke Slotegraaf

1997 March 24

1997-03-24, Monday. Jonkershoek. 11x80 tripod. Full Moon. Not found.

Richard Ford

2013 March 9th, Saturday



Sky Conditions:The fainter parts of the Milky Way are barely visible.Haziness only visible on the horizon.

Instrument:12-inch Dobsonian.

This nebula's two faint regions are extremely faint and that they are just being seen at both 57x and 75x.Through my OIII filter at close range the fine subtle details of these regions are clearly visible and that these two patches are orientated in a north-south direction.This nebula measures 19.5'x 16.2'.

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