NGC 684

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NGC 684
NGC684 - SDSS DR14.jpg
NGC 684 (SDSS)
Observation data (J2000.0 epoch)
Constellation Triangulum
Right ascension 01h 50m 14.02s [1]
Declination +27° 38′ 44.4″ [1]
Redshift 0.011791 [1]
Helio radial velocity 3535 ± 1 km/s [1]
Distance 135 Mly [1]
Apparent magnitude  (V)12.50 [2]
Apparent magnitude  (B)13.30 [2]
Characteristics
Type Sb
Apparent size  (V)3.2 x 0.6 [1]
Other designations
IC 165, MCG +4-5-17, PGC 6759

NGC 684 is a spiral galaxy approximately 135 million light-years away from Earth in the constellation of Triangulum. [1] It was discovered by William Herschel on October 26, 1786. [3] Edward Swift, Lewis' son, found this galaxy again on 18 Jan 1890 while "searching for Swift's Comet." and it was reported as a new object in list IX-6. [3]

Contents

NGC 684 (SDSS) NGC 0684 SDSS.jpg
NGC 684 (SDSS)

See also

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References

  1. 1 2 3 4 5 6 7 "NASA/IPAC Extragalactic Database". ned.ipac.caltech.edu. Retrieved 4 December 2017.
  2. 1 2 "Revised NGC Data for NGC 684". spider.seds.org. Retrieved December 9, 2017.
  3. 1 2 "Data for NGC 684". www.astronomy-mall.com. Retrieved December 9, 2017.


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