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NGC 2170 (4,082 of 18,816)


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NGC 2170

NGC 2170, Ced 63, DG 88, VDB 67, LBN 213.69-12.65, LBN 994, Magakian 173, IV 19, GC 1362

RA: 06h 07m 31s
Dec: −06° 23′ 59″

Con: Monoceros
Ch: MSA:276, U2:271, SA:11

Ref: [2003A&A...399..141M]

(reference key)

Type: reflection nebula

Mag: B=?, V=?

Size: ?
PA: ?

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

NGC 2170. See NGC 2167.

Historical observations

William Herschel (c.1784)

Synonyms: H IV-019

Discovered in 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "a star of the 9th magnitude with milky chevelure, irregularly elliptical." In the Philosophical Transactions, 1791, Herschel wrote: "October 16, 1784. A star of about the 9th magnitude, surrounded by a milky nebulosity, or chevelure, of about 3 minutes in diameter. The nebulosity is very faint, and a little extended or elliptical, the extent being not far from the meridian, or a little from np to sf. The chevelure involves a small star, which is about 1.5 minute north of the cloudy star; other stars if equal magnitude are perfectly free from this appearance. My present judgement concerning this remarkable object is, that the nebulosity belongs to the star which is situated in its centre. The small one, on the contrary, which is mentioned as involved, being one of many that are profusely scattered over this rich neighbourhood, I suppose to be quite unconnected with this phaenomenon."

Published comments

Burnham, S.W. (1894)

Publ.Lick.Obs. Volume 2."Observations of Nebulae with the 36-inch Refractor of the Lick Observatory", p 168.

[Noticed while observing 2182]

The nebulous light around the small star, SD 6°1414 is very marked, and must be at least 2' or 3' in diameter. It is extended nearly north and south, as described in the catalogue.

Helwan Obs. Bulletin No 15 (1915)

B, pL, structureless, round BD-6°1415

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

Ced 63 (NGC 2170)

Position (1900): RA 6 2.7, Dec - 6 23

Star: 6 1415 (Mp=11.0, V=10.2, SpT=B1)

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

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

Size: 1'x0.6'

Notes: "NGC 2170 = GC 1362 = H IV 19. Disc. 1784. (114, 153, 232, 366, 486, 578, 630 PL 34, 631, 686, 687, 715)."

Lynds, B.T. (1962)

Lynds, B.T. (1962) Catalogue of dark nebulae. Astrophys.J.Suppl.Ser. 7, 1-52. [also: computer datafile: VII/7A]

Dorschner & Gürtler (1963)

Untersuchungen uber Reflexionsnebel.

DG 88

= NGC 2170, Ced 63

Pos (1950.0) 06:05.1, −6:23

Size: 2x2 (blue), 3x3 (red).

Sulentic & Tifft (1973)

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

Magakian T. Yu. (2003)

= DG 88, [RK68] 48, VdB 67, N2170, GN 06.05.1, Ced 63

Class: C (reflection neb)

Photo index

Photo Index by Jim Lucyk: Vehrenberg's Atlas of Galactic Neb-1 p83.

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