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 7418 (17,465 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 7418

NGC 7418, AGC 35786, ESO 406-25, LEDA 70069, MCG-06-50-013, SGC 225348-3717.8, h 3963, GC 4863

RA: 22h 56m 35.9s
Dec: −37° 01′ 45″

Con: Grus
Ch: MSA:1423, U2:384, SA:23

Ref: SIMBAD

(reference key)

Type: galaxy, Sc

Mag: B=12, V=11.39

Size: 3.801′ x 2.884′
PA: 139°

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

NGC 7418. Dreyer suggested that this might be IC 5265 (which see), but it is not.

Historical observations

John Herschel (1847) Cape Observations

Discovered by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "pB, vL, R, or vlE, vgbM, 4' diam, with left eye resolvable, hardly resolved, PD bad. A fine object." On a second occassion he called it "B, vL, R or vlE, vglbM, 5'." His third observation was recorded as "vF, vL, R, vglbM, 3'."

Swift, Lewis (1896)

See Swift's comments on IC 5264.

Published comments

Helwan Obs. Bulletin No 9 (1912)

F, 2' ino diameter, spiral.

Helwan Obs. Bulletin No 22 (1921)

F, 2.5'x2.5', spiral with pF alm.stell.N. This is a 'left-hand' spiral with two main branches which are close together on the f. side, and from these proceed a number of smaller subsidiary whisps.

de Vaucouleurs, G. (1956)

De Vaucouleurs (1956) "Survey of bright galaxies south of -35° declination", Mem. Mount Stromlo, No. 13. (photographic study, plates taken with the 30-inch Reynolds reflector, 20-inch diaphragm).

Shobbrook (1966)

Shobbrook (1966, Mon. Not. R. astr. Soc., Vol 131, p351-363) notes that this member of the Grus Cluster has V = 11.77, B-V = 0.60 and U-B = -0.05. It measures 3.2 by 2.2.

Shapley, H. & Paraskevopoulos, J.S. (1940)

Shapley, H. & Paraskevopoulos, J.S. (1940) Southern clusters and galaxies. Harvard Obs. Bull., No.914, 6-8.

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 12.0 mag galaxy. Their coded description reads S,VDIF,LBM,DKLNS, SEV KNS IN CT.

Supernovae

A supernova erupted in this galaxy in 1983 (15.5p)

Sandage (1975)

Sandage (1975(Astrophysical Journal, 202, 563-582) notes that this galaxy is a member of the IC 1459 Grus Group. Members include NGC 7410, NGC 7412, NGC 7418, NGC 7421, NGC 7424, NGC 7496, NGC 7531, NGC 7552, NGC 7582, NGC 7590, NGC 7599, IC 1459, IC 5267, IC 5269 & IC 5273.

Modern observations

Steve Coe

Steve Coe, observing with a 13" f/5.6, notes: "Pretty faint, large, round and little brighter in the middle at 100X."

Brian Skiff

Canterbury: pa130 overall, paE-W in core.

ESO: pa139:.

8cm - not vis. BS, 6Sep1983, Anderson Mesa.

15cm - vf. BS, Slate Mtn.

- lg diffuse glow @ 80x. 140x: 3' diam, or 1/3 sep of m10-11 *s NNW & SSW (latter is un= pair). mod broad concen completely w/o zones. * or knot SSW side w/in halo, another vf */*ing nr S edge. BS, 15Nov1993, LCO.

25cm - losfcbr, 2'.5x1' in pa80-100. cigar-shaped w/o cen condens. a few broad br and dk areas w/in it, but pretty smooth overall. 95x. BS, Slate Mtn.

Contemporary observations

Magda Streicher

(no date)

Alldays (22.50S, 20.12E, 770m).

12-inch f/10 SCT (218x, 346x)

Lovely large round glow situated between four block stars which is away more or less 5' to the sides, it resembles the Crux constellation. Very soft to the edges but slightly oval in a NW-SE direction.

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.