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NGC 6357 (14,423 of 18,816)

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War and Peace Nebula

NGC 6357, Ced 142, Gum 66, RCW 131, Sh 2-11, Lobster Nebula, War and Peace Nebula, h 3682, GC 4297

RA: 17h 24m 18s
Dec: −34° 20′ 0″

Con: Scorpius
Ch: MSA:1439, U2:376, SA:22

Ref: SIMBAD, DAML02

(reference key)

Type: bright nebula (HII region)

Mag: B=?, V=?

Size: 2′
PA: ?

Image gallery

Photos  (2)

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Historical observations

Innes, R.T.A

Innes, in Union Obs. Circ., 45-76, p 3, notes: "... The following nebulae and a cluster were incidentally noted on the [Franklin-Adams] plates of 1916 July 3 and 4: .... NGC 6357 = h 3682. 1875. RA 17h 16.5m, Dec -34° 4'. Small crescent shaped nebula partly around an 11th magnitude star."

Published comments

Helwan Obs. Bulletin No 22 (1921)

F, 4' long, irr.nebula, mE 90deg approx; a line of structureless nebulosity, looped around two small stars at p.end. There are indications of fainter outlying nebulosity, and possibly absorption to the south.

Duncan, J.C. (1940)

Red nebulae in the tail of Scorpio. Publ. A.A.S., 10, 48.

Cederblad, S. (1946) [VII/231]

Ced 142 (NGC 6357)

Position (1900): RA 17 18.1, Dec - 34 6

Star: -34 11671 (Mp=10.0, V=10. :)

Spectrum of nebula: emission spectrum (observed)

Classification: Neb associated with mainly one star (which may be multiple) - star surrounded by a neb envelope without conspicuous structure (eg. lambda Scorpii)

Size: 4'x0.5'

Notes: "NGC 6357 = GC 4297 = h 3682. Disc. 1837. (93 Pl 22, 243, 297, 365)."

Lindsay, E.M

Lindsay, E. M. () "NGC 6334, NGC 6357 and surrounding regions", IAJ, vol 3, p 182.

Sulentic & Tifft (1973)

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

Photo index

Photo Index by Jim Lucyk: Vehrenberg's Atlas of DS Splendors (3ed) p179.

Modern observations

Steve Coe

Steve Coe, observing with a 17.5" f/4.5 at 100X, notes: "Pretty bright, pretty small and elongated E-W 3' X 1' at 100X. That is without the UHC filter, adding the nebula filter brings out many faint filaments of nebulosity that extend beyond the 30' field in all directions. I counted 28 stars involved.

Contemporary observations

Magda Streicher

(no date)

16-inch f/10 SCT (127x, 290x)

The dark area is quite evedent and seen with ease with a nebular filter in place. The centre contains a few faint stars 13Magnitude in a short string from N-S. Pismis 24 is situated towards the SE of this nebula. A double stars can be seen towards the middle and a 7Magnitude star is the brightest star in the area.

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