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IC 1284 (15,076 of 18,816)

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IC 1284

IC 1284, Ced 157d, Gum 78B, RCW 153, ESO 590-16

RA: 18h 17m 39.6s
Dec: −19° 40′ 19″

Con: Sagittarius
Ch: MSA:1368, U2:339, SA:22

Ref: SIMBAD, NED

(reference key)

Type: bright nebula

Mag: B=7.7, V=?

Size: ?
PA: ?

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

IC 1284. See IC 1283, and NGC 6590 = NGC 6595 = IC 4700.

Historical observations

Barnard, E.E. (1892)

Barnard, E. E. (1892) "A New nebulous star, and corrections to the NGC", A.N. 3101.Announced in AN 3101.

Barnard, E.E. (1892)

Barnard, E. E. (1892) "Photographic nebulosities and groups of nebulous stars", A.N. 3111.

Mentions this nebulous star.

Published comments

Helwan Obs. Bulletin No 9 (1912)

See remarks on NGC 6595.

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

Ced 157d (IC 1284)

Position (1900): RA 18 11.7, Dec - 19 42

Star: -19 4953 (Mp=7.56, V=7.49, SpT=B5)

Spectrum of nebula: continuous spectrum (inferred from sp.t. of illuminating star)

Classification: Nebulous cluster (milky neb cover the clusters, eg NGC 1976)

Size: 16.5'x15'

Notes: "157 d = IC 1284 = The nebula around -19 4953 = HD 167815 = Boss 24954. Disc. Barnard 1892 (49). FA 86. WP 93. (51, 82, 85, 88 Pl 55, 93 Pl 29 Pl 31 Pl 32, 339, 366, 482, 486, 630 Pl 7, 715). Taken as a whole No 157 should be classified as A. 2."

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Photo Index by Jim Lucyk: Deep Sky #11 Su85 p21, Vehrenberg's Atlas of Galactic Neb-2 p38.

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