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 6603 (15,080 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


Warning: date(): It is not safe to rely on the system's timezone settings. You are *required* to use the date.timezone setting or the date_default_timezone_set() function. In case you used any of those methods and you are still getting this warning, you most likely misspelled the timezone identifier. We selected the timezone 'UTC' for now, but please set date.timezone to select your timezone. in /home/yivumoo/public_html/show_object.php on line 167

show browsing

NGC 6603

NGC 6603, Cl Collinder 374, Cl Melotte 197, ESO 590-17, Bennett 107A (in Messier 24), h 2004, GC 4397

RA: 18h 18m 26.9s
Dec: −18° 24′ 22″

Con: Sagittarius
Ch: MSA:1368, U2:339, SA:15

Ref: NGC/IC, Archinal&Hynes (2003)

(reference key)

Type: open cluster, 12r

Mag: B=?, V=11.1

Size: 5′
PA: ?

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

NGC 6603, a relatively small and faint cluster, is not M24. The Messier object is actually IC 4715, which see for more.

Published comments

Melotte, P.J. (1915)

A catalogue of star clusters shown on Franklin-Adams chart plates. Mem.R.A.S., 60(5), 175-186.

Raab, S. (1922)

Raab, S. (1922) A research on open clusters. Lund Medd. Astron. Obs. Ser. II, 28, 1.

Discussed, based of F-A plates.

Doig, P. (1925)

Doig, P. (1925) Notes on the nebulae and clusters in Webb's 'Celestial Objects for Common Telescopes' (Sixth edition, Vol.ii). Part IV. M.N.R.A.S., 36(2), 58.

Trumpler, R.J. (1928)

Trumpler (Lick Obs Bul, Vol 14, No. 420) gives the diameter as 4.5' and the class as 1 2 r.

Bailey, S.I. (1908)

"cluster, fairly condensed, in one of the richest regions of the MilkyWay"

Bailey, S.I. (1908) A catalogue of bright stars and nebulae. Ann.Harv.Coll.Obs., 60(8), 199.

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 11.5 mag open cluster.

Modern observations

Harrington, Phil

Phil Harrington (Sky&Telescope, July, 1992) writes: "... NGC 6603 appears as a rich, albeit faint, glow measuring 5' across and accented with a few feeble points of 14th mag light. Although most definitely an open cluster, the misty appearance of NGC 6603 has led more than a few observers to believe it's a globular. Only after closer examination with higher magnifications and larger apertures will the true nature of NGC 6603 be revealed."

Ware, Donald J

Donald J. Ware:"Has sometimes been erroneously identified as M- 24. This cluster is a small and tightly gathered grouping of stars which is best seen through a telescope."

Steve Coe

Steve Coe, observing with a 13" f/5.6, notes: "Bright, pretty large, very rich, very compressed, 33 stars counted at 165X. Nice reddish-orange 10th mag star on south side."

Contemporary observations

Magda Streicher

1997 August 05

12-inch Meade, 40mm eyepiece, 53' fov. 1997-08-05, fair sky conditions "Cluster easy visible with well condensed bright stars in an elongated haziness. Relatively rich and busy starfield." [Magda Streicher, Pietersburg 23-53S, 29-28E]

(no date)

12-inch f/10 SCT (EP: 2-inch 40mm SW 76x 53' fov; 2-inch 14mm UW 218x 23' fov)

Cluster easy visible with condensed faint stars in a slightly elongated northeast to south western direction and covered in haziness. Although if form part of the rich and busy Sagittarius Star Cloud it stands out well against the star-field. A few strings south can be seen running out into the field of view.

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.