NGC 547

elliptical galaxy in the constellation Cetus

Key facts

Constellation: Cetus
Right ascension: 01 26 00.6106
Declination: −01 ° 20 ′ 42.471 ″
Redshift: 0.018239 ± 0.000020
Heliocentric radial velocity: 5,468 ± 6 km / s
Distance: 213.99 ± 15.85 Mly (65.609 ± 4.861 Mpc )
Group or cluster: Abell 194
Type: E1
Size: ~146,700 ly (44.98 kpc ) (estimated)
Apparent size v: 1.9′ × 1.8′

via Wikipedia infobox

Wikidata facts

Image: NGC 0547 SDSS.jpg

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Article

NGC 547 is an elliptical galaxy and radio galaxy (identified as 3C 40) located in the constellation Cetus. It is located at a distance of about 214 million light years from Earth, which, given its apparent dimensions, means that NGC 547 is about 147,000 light years across. It was discovered by German-British astronomer William Herschel on October 1, 1785. It is a member of the Abell 194 galaxy cluster and is included along with NGC 547 in the Atlas of Peculiar Galaxies.

NGC 547 is a prominent radio galaxy, with two large radio jets of Fanaroff-Riley class I with wide-angle tails. The galaxy is identified as 3C 40B (3C 40A is less prominent and is associated with the nearby galaxy NGC 541), and the source extends for 10 arcminutes in the south–north direction. A small, smooth, dark feature has been observed running across the nucleus in images by the Hubble Space Telescope. Its projected size is 0.3 kpc and its shape suggests it is the near side of a small dust disk.