Open Cluster NGC 1245

NGC 1245
NGC 1245: Open cluster in Perseus; 500 mm Cassegrain f=3625 mm f/7.2; SBIG STL11K; 80+3*55 min LRGB; Bernese Highlands; © 2015 Radek Chromik [32]

History

The open star cluster NGC 1245 was discovered on 11 December 1786 by the German-British astronomer William Herschel with its 18.7 inch reflector. It has an apparent visual magnitude of 8.4 magnitudes and is of the Tumpler type III1r. [196] [196]

Physical Properties

NGC 1245 is a rich, old, open star cluster with 870 stars. Its age is estimated to be 1.04 ± 0.09 billion years. Its metallicity [Fe/H] = -0.05 ± 0.08 is somewhat lower than that of the sun. The distance in the direction of the galactic anticentre is 2.8 ± 0.2 kpc. The radius of the cluster is 3.10 ± 0.52 arc minutes (2.57 ± 0.43 pc). The total mass of the cluster is estimated to be 2700 ± 600 solar masses. [379, 380]

Revised+Historic NGC/IC Version 22/9, © 2022 Dr. Wolfgang Steinicke [277]
DesignationNGC 1245
TypeOCL (III1r)
Right Ascension (J2000.0)03h 14m 41.4s
Declination (J2000.0)+47° 14' 19"
Diameter10 arcmin
Visual magnitude8.4 mag
Metric Distance2.876 kpc
Dreyer DescriptionCl, pL, Ri, C, iR, st 12…15
Identification, RemarksWH VI 25; h 290; GC 658; OCL 389

Finder Chart

The open star cluster NGC 1245 is located in the constellation Perseus. The best observation time is January to December.

Perseus: Open Cluster NGC 1245
Finder Chart Open Cluster NGC 1245
00:42
11:49 | 89.5°
22:57
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 46.7996°, Longitude 8.23225°, Horizon height 5°, Date 2025-05-05. [149, 160]

Objects Within a Radius of 15°

3C 66A
Abell 4
Abell 5
IC 289
Soul Nebula
IC 1848
Kr 2-1
Messier 34
Owl Cluster
NGC 457
h+χ Persei
NGC 869/884
Silver Sliver Galaxy
NGC 891
NGC 1023
Perseus A
NGC 1275
Little Scorpion Cluster
NGC 1342
Little Pacman
NGC 1491
California Nebula
NGC 1499
Ring Cluster
NGC 1513
NGC 1528
NGC 1545
NGC 1624
QSO J0222+4221
Andromedas Parachute
QSO J014709+463037
Sh 2-207
Sh 2-208
Pazmino's Cluster
Stock 23
Rose Galaxy
UGC 1810/3

References

  • [32] Astrofotografie; Radek, Bernie and Dragan; sternwarte.ch
  • [149] SkySafari 6 Pro, Simulation Curriculum; skysafariastronomy.com
  • [160] The STScI Digitized Sky Survey; archive.stsci.edu/cgi-bin/dss_form
  • [196] Celestial Atlas; Curtney Seligman; cseligman.com/text/atlas.htm; 2020-12-28
  • [277] Historische Deep-Sky Kataloge; Dr. Wolfgang Steinicke; klima-luft.de/steinicke; 2021-02-17
  • [379] Survey for Transiting Extrasolar Planets in Stellar Systems. IV. Variables in the Field of NGC 1245; Joshua Pepper1 and Christopher J. Burke; Published 2006 July 27; The Astronomical Journal, Volume 132, Number 3; DOI:10.1086/505942
  • [380] Survey for Transiting Extrasolar Planets in Stellar Systems. I. Fundamental Parameters of the Open Cluster NGC 1245; Christopher J. Burke, B. Scott Gaudi, D. L. DePoy, Richard W. Pogge, and Marc H. Pinsonneault; The Astronomical Journal, Volume 127, Number 4, 2004; DOI:10.1086/382720