NGC 1647

Last updated
NGC 1647
(palle)NGC 1647.jpg
Observation data (J2000 epoch)
Right ascension 04h 45m 55s [1]
Declination ±19° 06 54 [1]
Distance 1,800 ly (on average) (550 ps [2] )
Apparent magnitude  (V)6.4 [1]
Apparent dimensions (V)45'
Physical characteristics
Other designations Cr 54
Associations
Constellation Taurus
See also: Open cluster, List of open clusters

NGC 1647 is an open cluster in the constellation Taurus. It contains nearly 90 stars and it lies at a distance of 550 parsec. [2] It is visible even with binoculars close to Aldebaran. It was discovered by William Herschel in 1784. [3] It is located behind the Taurus dark nebula complex, approximately 160 parsec away. The brightest main sequence stars are of spectral type B7. Its age is estimated to be 150 million years. [4]

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<span class="mw-page-title-main">NGC 6025</span> Open cluster in the constellation Triangulum Australe

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<span class="mw-page-title-main">NGC 5460</span> Open cluster in the constellation Centaurus

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<span class="mw-page-title-main">NGC 5617</span> Open cluster in the constellation Centaurus

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<span class="mw-page-title-main">NGC 5316</span> Open cluster in the constellation Centaurus

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<span class="mw-page-title-main">NGC 4349</span> Open cluster in the constellation Crux

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<span class="mw-page-title-main">NGC 4103</span> Open cluster in the constellation Crux

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<span class="mw-page-title-main">NGC 7419</span> Open cluster in the constellation Cepheus

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<span class="mw-page-title-main">NGC 6910</span> Open cluster in the constellation Cygnus

NGC 6910 is an open cluster in the constellation Cygnus. It was discovered by William Herschel on October 17, 1786. The cluster was also observed by John Herschel on September 18, 1828. It is a poor cluster with prominent central concentration and Trumpler class I2p. NGC 6910 is the core cluster of the stellar association Cygnus OB9.

References

  1. 1 2 3 "NGC 1647". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2015-06-19.
  2. 1 2 C. A. Guerrero; J. H. Peña; J. P. Sareyan (2011). "uvby-B Photoelectric Photometry of the Open Clusters NGC 1647 and NGC 1778". Revista Mexicana de Astronomía y Astrofísica. 47 (1): 185–192. Bibcode:2011RMxAA..47..185G . Retrieved 19 June 2015.
  3. NGC/IC online - result for NGC 1647 Archived 2012-05-20 at the Wayback Machine
  4. Zdanavičius, J.; Straižys, V.; Chen, C. W.; Chen, W. P.; Zdanavičius, K.; Kazlauskas, A.; et al. (2005). "Seven-Color Photometry of the Open Cluster NGC 1647 Area". Baltic Astronomy. 14: 179–203. Bibcode:2005BaltA..14..179Z.