NGC 6301

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Galaxy
NGC 6301 / IC 4643
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NGC 6301 [1] SDSS image
NGC 6301 SDSS image
AladinLite
Constellation Hercules
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 17 h 08 m 32.740 s
declination + 42 ° 20 ′ 20.82 ″
Appearance
Morphological type Scd:  
Brightness  (visual) 13.5 likes
Brightness  (B-band) 14.2 mag
Angular expansion 1.8 ′ × 1.1 ′
Position angle 115 °
Surface brightness 14.1 mag / arcmin²
Physical data
Redshift 0.027833 ± 0.000033  
Radial velocity 8344 ± 10 km / s  
Stroke distance
v rad  / H 0 		(381 ± 27)  x  10 6  ly
(116.8 ± 8.2)  Mpc 
history
discovery Wilhelm Herschel
Discovery date June 11, 1788
Catalog names
NGC  6301 • IC  4643 • UGC  10723 • PGC  59681 • CGCG  225.49 • MCG  + 07-35-34 • IRAS  17069 + 4224 • 2MASX  J17083273 + 4220208 • GC  4274 • H  IV 57 • LDCE 1238 NED010 • NVSS J170831 + 422032

NGC 6301 = IC 4643 is a 13.5 mag bright spiral galaxy of the Hubble type Sc in the constellation Hercules in the northern sky . It is estimated to be 381 million light-years from the Milky Way and about 200,000 light-years across.

In the same area of ​​the sky are u. a. the galaxies NGC 6311 and NGC 6312 .

The object was discovered on June 11, 1788 by Wilhelm Herschel with an 18.7-inch reflector telescope, who described it as "a vS, F star involved in eF nebulosity". In his “Philosophical Transactions” of 1791 he wrote in retrospect “Suspected, stellar. By a second observation it is verified, and called a very small star involved in extremely faint nebulosity ". Due to an error in Herschel's position information, the observation of the same galaxy by Johann Palisa in 1896 led to a further entry in the index catalog under IC 4643 .

Web links

Individual evidence

  1. ^ Aladin Lite
  2. ↑ a b c d NASA / IPAC EXTRAGALACTIC DATABASE
  3. ↑ a b c d e SEDS : NGC 6301
  4. ↑ Seligman
  5. ↑ a b Auke Slotegraaf : NGC 6301. Deep Sky Observer's Companion, accessed on July 19, 2016 (English).