Open Cluster NGC 7686

LBN 534 + NGC 7686
LBN 534 + NGC 7686: Section of STScI/NASA Digitized Sky Survey 2 (DSS2). Here could be your picture. [147]

History

The open cluster NGC 7686 was discovered on 3 December 1787 by William Herschel. He recorded it as VIII 69 and noted: «A coarsely scattered cluster of pretty large stars. Contains one 8m in the south following part.» [464] His son John observed it three times and listed it as. On 14 September 1829 he wrote following notes: «A bright coarse cluster 7' diam; seen in full moonlight. Place of the chief star = 7m; about a dozen 9...11m, and many 12...14m.» [466]

Physical Properties

Revised+Historic NGC/IC Version 22/9, © 2022 Dr. Wolfgang Steinicke [277]
Designation NGC 7686
Type OCL (IV1p)
Right Ascension (J2000.0) 23h 30m 07.3s
Declination (J2000.0) +49° 08' 03"
Diameter 15 arcmin
Visual magnitude 5.6 mag
Metric Distance 1.534 kpc
Identification, Remarks WH VIII 69; h 2249; GC 4976; OCL 251

Finder Chart

The open cluster NGC 7686 is located in the constellation Andromeda. On 13 September it is in opposition to the Sun and hence culminates at local midnight. The best viewing time from Switzerland is in the months June to February.

Finder Chart Open Cluster NGC 7686
Open Cluster NGC 7686 in constellation Andromeda. Charts created using SkySafari 6 Pro and STScI Digitized Sky Survey. Limiting magnitudes: Constellation chart ~6.5 mag, DSS2 close-ups ~20 mag. [149, 160]

Objects Within a Radius of 15°

References

  • [147] Aladin Lite; aladin.unistra.fr/AladinLite
  • [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» von Dr. Wolfgang Steinicke; klima-luft.de/steinicke (2021-02-17)
  • [464] «Catalogue of a second thousand of new nebulae and clusters of stars; with a few introductory remarks on the construction of the heavens» William Herschel, Philosophical Transactions of the Royal Society of London, 1 January 1789; DOI:10.1098/rstl.1789.0021
  • [466] «Observations of nebulæ and clusters of stars, made at Slough, with a twenty-feet reflector, between the years 1825 and 1833» John Frederick William Herschel, Philosophical Transactions of the Royal Society of London, 1 January 1833, Pages: 359-505; DOI:10.1098/rstl.1833.0021