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IC 336
IC 336, DG 20, Ced 19a, LBN 773, LBN 166.92-25.20
Type: reflection nebula
Mag: B=?, V=?
Size: ?
PA: ?
History and Accurate Positions for the NGC/IC Objects (Corwin 2004)
IC 336, IC 341, IC 353, IC 354, and IC 360. These eF diffuse nebulae were identified by reference to Barnard's drawing in A.N. 3253, and to his drawing and photograph in M.N. 57, 12, 1897. Barnard's sketch is more or less confirmed by PSS plates O and E441 and O and E31. Curiously, Dreyer did not include all of the patches of nebulosity shown by Barnard, and those that he did list in the IC are not necessarily the brightest. With the possible exceptions of I353 and I354, these nebulae are probably not associated with the Pleiades, but appear more likely to be Galactic reflecting nebulae (see Alan Sandage's article in AJ 81, 954, 1976 for more on these fascinating objects). Note also that the IC position of I360 is 5m in error.
Published comments
Cederblad, S. (1946) [VII/231]
Ced 19a (IC 336)
Position (1900): RA 3 33, Dec :+ 22
Star: Plei (Mp=1.2, , SpT=B5, B8)
Spectrum of nebula: continuous spectrum (inferred from sp.t. of illuminating star)
Classification: Nebulae without definite relation to certain stars - Background veil of a nebulous region (eg. the Taurus veil)
Size: 120'x50'
Notes: "19a = IC 336. Disc. Barnard 1894. WP 201. (56). R. Part of the general background. +22 518 aligned."
Dorschner & Gürtler (1963)
Untersuchungen uber Reflexionsnebel.
DG 20
= IC 336, Ced 19
Pos (1950.0) 03:36.0, +22:10
Size: 90x90 (blue), 65x65 (red).
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Favourite lists
Lacaille's catalogue
The Messier objects
Dunlop's catalogue
The Bennett objects
The Caldwell list
Named DSOs
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