NGC 4413

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Galaxy
NGC 4407 / NGC 4413
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SDSS recording
SDSS recording
AladinLite
Constellation Virgin
Position
equinoxJ2000.0 , epoch : J2000.0
Right ascension 12 h 26 m 32.2 s
declination + 12 ° 36 ′ 40 ″
Appearance
Morphological type (R ') SB (rs) from: / HII  
Brightness  (visual) 11.9 likes
Brightness  (B-band) 12.7 mag
Angular expansion 2.3 ′ × 1.4 ′
Position angle 60 °
Surface brightness 13.0 mag / arcmin²
Physical data
Affiliation Virgo cluster (?)
Holm 403F  
Redshift 0.000340 ± 0.000020  
Radial velocity 102 ± 6 km / s  
Stroke distance
v rad  / H 0
(2 ± 0)  x  10 6  ly
(0.65 ± 0.1)  Mpc 
diameter 35,000 ly
history
discovery Wilhelm Herschel
Discovery date April 17, 1784
Catalog names
NGC  4413 • NGC 4407 • UGC  7538 • PGC  40705 • CGCG  070-076 • MCG  + 02-32-049 • IRAS  12239 + 1253 • 2MASX  J12263225 + 1236390 • VCC  912 • GC  2968/2974 • H  II 169 • h  1255 / 1259 • LDCE 904 NED109 • VPC 472 • EVCC 609

NGC 4407 = NGC 4413 is a bar-spiral galaxy with extensive star formation areas of the Hubble type SBab in the constellation Virgo on the ecliptic . It is estimated to be 2 million light years from the Milky Way and is listed under catalog number VVC 912 as part of the Virgo Galaxy Cluster. The radial speed of NGC 4407 of 105 km / s is too low to provide a reliable indicator of the distance, as particular speeds (without Hubble expansion) could make up a significant part of the value. In fact, the distance of 2 million light years corresponding to its speed is far less than the redshift independent distance estimate of about 51 million light years.

In the same area of ​​the sky are u. a. the galaxies NGC 4388 , NGC 4425 , IC 3349 , IC 3363 .

The object was discovered by Wilhelm Herschel on April 17, 1784 and accidentally recorded twice, so that two entries in the New General Catalog refer to this galaxy.

Web links

Individual evidence

  1. a b c d e NASA / IPAC EXTRAGALACTIC DATABASE
  2. a b c d Revised NGC Data for NGC 4413
  3. ^ A b Richard Powell: The Virgo Cluster. In: An Atlas of the Universe. July 30, 2006, accessed September 2, 2008 .
  4. Seligman