sponsored by psychohistorian.org

DOCdb

Deep Sky Observer's Companion – the online database

 

Welcome, guest!

If you've already registered, please log in,

or register an observer profile for added functionality.

List:

log in to manage your observing lists

 browse:

 

 position:

 

 next:

 

 options:

summary

rename

prune

trim

remove

close

copy

combine

plan

bookmark

load

new

delete

marathon

favourite!

Full database:

Entire DOCdb database of 18,816 objects.

 browse:

 position:

NGC 2170 (4,082 of 18,816)

 next:

oc gc pln bn dn gx gxcl ast aka lost

Object:

list

bookmark

finder chart

altitude today

altitude (year)

 search:

½°, , in DOCdb

show browsing

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.

Favourite lists

Lacaille's catalogue

The Messier objects

Dunlop's catalogue

The Bennett objects

The Caldwell list

Named DSOs

Object search

First search phrase

    and

Second search phrase

Type of object to include:

open cluster
globular cluster
planetary nebula
bright nebula
dark nebula
galaxy
galaxy cluster
asterism & stars
unverified/lost
nova

The Bug Report

DOCdb is still in beta-release.

Known issues, feature requests, and updates on bug fixes, are here:

> Bug Report

Feedback

Found a bug? Have a comment or suggestion to improve DOCdb? Please let us know!

> Contact us

Help!

DOCdb is a free online resource that exists to promote deep sky observing.

You could help by sharing your observations, writing an article, digitizing and proof-reading historical material, and more.

> Find out more

Everything on DOCdb.net is © 2004-2010 by Auke Slotegraaf, unless stated otherwise or if you can prove you have divine permission to use it. Before using material published here, please consult the Creative Commons Attribution-Non-Commercial-Share Alike 2.5 License. Some material on DOCdb is copyright the individual authors. If in doubt, don't reproduce. And that goes for having children, too. Please note that the recommended browser for DOCdb is Firefox 3.x. You may also get good results with K-Meleon. Good luck if you're using IE. A successful experience with other browsers, including Opera and Safari, may vary.