Open Cluster NGC 5823

NGC 5823
NGC 5823: Section of DECam Plane Survey (DECaPS) DR2. Here could be your picture. [147]

History

This cluster was discovered by James Dunlop on 8 May 1826 while observing with his 9-inch speculum reflector from Parramatta, NSW. He listed it as Δ 351. The summary description based on two observation reads: «A pretty large cluster of small stars resembling faint nebula, general figure round, south preceding 2 Pysidis.» [50]

John Herschel, unaware of Dunlop's discovery, listed this cluster as h 3589 and observed it once in April 1836 (sweep 694) from South Africa and noted: «Cluster VII. class; a fine large cluster of separate stars 13...14 mag, 10' diameter; not much compressed in the middle; nearly fills the field» [11]

Physical Properties

Revised+Historic NGC/IC Version 22/9, © 2022 Dr. Wolfgang Steinicke [277]
DesignationNGC 5823
TypeOCL (III2m)
Right Ascension (J2000.0)15h 05m 30.5s
Declination (J2000.0)-55° 36' 13"
Diameter12 arcmin
Visual magnitude7.9 mag
Metric Distance1.192 kpc
Dreyer DescriptionCl, cL, Ri, lCM, st 13…14
Identification, Remarksh 3589; GC 4032; OCL 936; ESO 176-SC11

Finder Chart

The open cluster NGC 5823 is located in the constellation Circinus. Unfortunately it is not visible from Europe. On 9 May it in opposition with the Sun and is therefore highest in the sky at local midnight.

Circinus: Open Cluster NGC 5823
Finder Chart Open Cluster NGC 5823
14:01
19:26 | 34.3°
00:52
Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey. Limiting magnitudes: Constellation chart ~6.5 mag, DSS2 close-ups ~20 mag. Times are shown for timezone UTC, Latitude 0°, Longitude 0°, Horizon height 5°, Date 2026-07-18 [149, 160]

Objects Within a Radius of 25°

Coalsack NebulaCoalsack Nebula IC 4633/5IC 4633/5 NGC 4372NGC 4372 NGC 4609NGC 4609 Jewel Box, NGC 4755Jewel Box
NGC 4755 NGC 4833NGC 4833 NGC 4852NGC 4852 NGC 4945NGC 4945 Centaurus A, NGC 5128Centaurus A
NGC 5128 Omega Centauri, NGC 5139Omega Centauri
NGC 5139 NGC 5286NGC 5286 NGC 6025NGC 6025 NGC 6087NGC 6087 NGC 6101NGC 6101 NGC 6124NGC 6124 NGC 6193NGC 6193 NGC 6231NGC 6231 NGC 6352NGC 6352 NGC 6397NGC 6397 Dark Doodad, Sandqvist 149Dark Doodad
Sandqvist 149

References

  • [11] Results of astronomical observations made during the years 1834, 5, 6, 7, 8, at the Cape of Good Hope ... : being the completion of a telescopic survey of the whole surface of the visible heavens, commenced in 1825; Herschel, John F. W.; London: published by Smith, Elder and Co., 1847; DOI:10.3931/e-rara-22242
  • [50] VIII. A catalogue of nebulæ and clusters of stars in the southern hemisphere, observed at Paramatta in New South Wales, by James Dunlop, Esq. In a letter addressed to Sir Thomas Makdougall Brisbane, Bart. K. C. B. late Governor of New South Wales. Presented to the Royal Society by John Frederick William Herschel, Esq. Vice President; James Dunlop; Philosophical Transactions of the Royal Society of London, Volume 118, pages 113-151, published 1 January 1828; DOI:10.1098/rstl.1828.0010
  • [147] Aladin Sky Atlas, Centre de Données astronomiques de Strasbourg (CDS); aladin.unistra.fr
  • [149] SkySafari 6 Pro, Simulation Curriculum; skysafariastronomy.com
  • [160] The STScI Digitized Sky Survey; archive.stsci.edu/cgi-bin/dss_form
  • [277] Historische Deep-Sky Kataloge; Dr. Wolfgang Steinicke; klima-luft.de/steinicke; 2021-02-17