NGC 4559

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Galaxy
NGC 4559
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SDSS, angle of view 12 '× 12'
SDSS , angle of view 12 '× 12'
AladinLite
Constellation Berenike's hair
Position
equinox :  J2000.0 , epoch : J2000.0
Right ascension 12 h 35 m 57.7 s
declination + 27 ° 57 ′ 35.1 ″
Appearance
Morphological type SAB (rs) cd / HII  
Brightness  (visual) 9.6 likes
Brightness  (B-band) 10.3 mag
Angular expansion 10.7 ′ × 4.4 ′
Position angle 150 °
Surface brightness 13.6 mag / arcmin²
Physical data
Redshift 0.002692 +/- 0.000003  
Radial velocity (807 +/- 1) km / s  
Stroke distance
v rad  / H 0 		(36 ± 3)  x  10 6  ly
(11.1 ± 0.8)  Mpc 
history
discovery Wilhelm Herschel
Discovery date April 11, 1785
Catalog names
NGC  4559 • UGC  7766 • PGC  42002 • CGCG  159-024 • MCG  + 05-30-030 • IRAS  12334 + 2814 • 2MASX  J12355768 + 2757351 • GC  3101 • H  I 92 • h  1352 • LDCE 867 NED120 • SDSS J123557.64 +275735.9

NGC 4559 is a bar-spiral galaxy with extensive star formation regions of the Hubble type SBcd in the constellation Haar der Berenike in the northern sky . It is estimated to be 36 million light years from the Milky Way and has a diameter of about 115,000 ly. The galaxy has an angular extent of 10.7 'x 4.4' and an apparent magnitude of 9.6 mag.
The galaxies NGC 4558 , NGC 4563 , IC 3556 are located in the same area of ​​the sky .

The object was discovered on April 11, 1785 by the German-British astronomer Wilhelm Herschel .

HII regions

On March 23, 1903, Max Wolf observed several smaller HII regions and star associations in the galaxy NGC 4559, which have been recorded in the index catalog .

Name of the object Right ascension declination m V Explorer Discovery date Alternative name
IC 3550 123551.812 h 35 m 51.8 s 2275557+ 27 ° 55 ′ 57 ″ ≈17 Max Wolf March 23, 1903 NGC 4559C
IC 3551 123553.812 h 35 m 53.8 s 2275750+ 27 ° 57 ′ 50 ″ Max Wolf March 23, 1903
IC 3552 12355412 h 35 m 54 s 2275936+ 27 ° 59 ′ 36 ″ Max Wolf March 23, 1903
IC 3555 12355612 h 35 m 56 s 2275924+ 27 ° 59 ′ 24 ″ Max Wolf March 23, 1903
IC 3563 123607.112 h 36 m 07.1 s 2275536+ 27 ° 55 ′ 36 ″ Max Wolf March 23, 1903
IC 3564 12360812 h 36 m 08 s 2275540+ 27 ° 55 ′ 40 ″ Max Wolf March 23, 1903

More shots

Web links

Commons : NGC 4559  - collection of images, videos, and audio files

Individual evidence

  1. ↑ a b c d NASA / IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c d SEDS NGC 4559
  3. ↑ Seligman