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 6287 (14,175 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 6287

NGC 6287, C 1702-226, GCl 54, Bennett 88, II 195, h 3666, GC 4269

RA: 17h 05m 9.34s
Dec: −22° 42′ 28.8″

Con: Ophiuchus
Ch: MSA:1395, U2:337, SA:22

Ref: SIMBAD, SEDS

(reference key)

Type: globular cluster

Mag: B=11.49, V=10.3

Size: 4.8′
PA: ?

Historical observations

William Herschel (c.1784)

Synonyms: H II-195

Discovered in May 1784 by William Herschel with an 18.7-inch f/13 speculum telescope. He called it "pB, cL, iR, lbM, r."

John Herschel (1847) Cape Observations

Observed by Sir John Herschel at the Cape of Good Hope with an 18-inch f/13 speculum telescope. He recorded it as "globular, irregular round, gpm comp M, 3' diam, barely reslved into stars 16..18th mag."

NGC/IC Dreyer (1888, 1895, 1908)

The NGC description reads: "considerably bright, large, round, first gradually then pretty much compressed to the middle, clearly resolved into stars of 16th magnitude".

Published comments

Hinks, A.R. (1911)

Hinks, A. R. (1911) On the galactic distribution of gaseous nebulae and of star clusters. MNRAS, 71(8), 693-701.

List 6: "NGC numbers of clusters classed as globular, not in Bailey's catalogue"

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

Melotte, P.J. (1915)

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

Sulentic & Tifft (1973)

The RNGC (Sulentic and Tifft 1973) notes that this is a 11.0 mag globular cluster.

Harris, W.E. (1997)

RA 17 05 09.4 (2000) Dec -22 42 29 Integrated V magnitude 9.35 Central surface brightness, V magnitudes per square arcsecond 18.33 Integrated spectral type F5- Central concentration, c = log(r_total/r_core); a 'c' denotes a core-collapsed cluster 1.60 Core radius in arcmin .26. ["Catalog Of Parameters For Milky Way Globular Clusters", compiled by William E. Harris, McMaster University. (Revised: May 15, 1997; from http://www.physics.mcmaster.ca/Globular.html; Harris, W.E. 1996, AJ, 112, 1487) ]

Alonso-Garcia, J. et al. (2012)

Uncloaking Globular Clusters in the Inner Galaxy. [2012AJ....143...70A]

The significant extinction is a consequence of the cluster's projected position, close to the Ophiuchus dust complex.

Modern observations

Tom Lorenzin

Tom Lorenzin, in the e-version of "1000+ The Amateur Astronomers' Field Guide to Deep Sky Observing", notes: "10.5M; 3' diameter; like nearby N6284 but larger, fainter, unresolved, and less compressed."

Hartung, E.J. (1968)

Hartung notes that "The Milky Way field in which this globular cluster lies is partly veiled by absorbing matter...which blots out most of the background stars. The cluster is about 1.5' across, irregularly round, not bright gand just resolved into very faint stars with a 12-inch. All that a 4-inch telescope shows is a faint round spot in an almost empty field."

Steve Coe

Steve Coe, using a 13" f/5.6, notes: " Pretty bright, pretty large, somewhat elongated 1.5 X 1, ten stars resolved at 220X."

Contemporary observations

Auke Slotegraaf

1983

In a 15.5-inch telescope at 220x, this cluster appears regular in shape, round, diffuse, no distinction between the concentrated nucleus and the outlier. Unlike the many globular clusters in this area, which all lie in pretty rich starfields, NGC 6287 lies near the edge of the dark nebula Barnard 51, and the stars readily visible within half a degree number under half a dozen.

Magda Streicher

1998 April 27

Location: Campsite (South 23 16 East 29 26).

Sky conditions: Very clear semi transparent.

Instrument: Meade 8" (Super plossl 26mm and wide-angle 18mm eyepiece).

Date: 26 to 28 April 1998.

Field of view: 36.2arc minutes.

Very faint, round small glow of light. Even brightness spills over the whole of this globular cluster. Not resolved and embedded in a bare starfield with no sharp edges.

(no date)

12-inch f/10 SCT (EP: 2-inch 32mm SW 95x 42' fov; 2-inch 14mm UW 218x 23' fov)

Very faint, round and small glow of light. Even brightness spills over the whole of this globular cluster. Not resolved, uneven with no sharp edges, embedded in a very bare star-field on the edge of the dark Barnard 51 nebula. Just a few field stars can be seen to the southwest. Discovered by William Herschel in May 1785. (Mag 9.3; size 5.0'; brightest stars = 14.5 mag. )

Tom Bryant

2009 9 13 21:39:21

Observing site: Pinnacles overlook

Telescope: C-11

[17h 5m 12s, -22 42' 0"] A faint, loose, small GC, I managed to resolve about 20 stars.

Richard Ford

2012 August, 19th

Location:Perdeberg.

Sky Conditions:The fainter parts of the Milky Way are barely visible.Haziness only visible on the horizon.Atmosphere stable with little interference.

Instrument:12-inch Dobsonian.

This globular cluster has the resemblance of a very small snowball at 75*and is seen as a mottled halo of 12th magnitude stars.There is no resolution in this cluster at all and that the stars are neatly arranged in a tight periphery towards the central core of this globular cluster.In overall the nucleus of this cluster is strongly condensed.From the central nucleus of this globular cluster the stars are comparitely brighter than the stars on the far outskirts of this cluster.Chart No.295,NSOG Vol.2

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.