Q1047119

galaxy

Key facts

Constellation: Lepus
Right ascension: 06 01 07.963
Declination: −23 ° 40 ′ 20.35 ″
Redshift: 0.006148 ± 0.000017
Heliocentric radial velocity: 1,836 km/s
Galactocentric velocity: 1,649 km/s
Distance: 120.6 Mly (36.98 Mpc )
Type: SAB(rs)cd
Number of stars: 9.1 × 10 M ☉
Apparent size v: 2.40 ′ × 1.9 ′
Notable features: Bulgeless

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Wikidata facts

Instance of: spiral galaxy
Constellation: Lepus
Distance from Earth: 26.7
Image: NGC 2139 DSS.jpg

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catalog code: LEDA 18258
Commons category: NGC 2139
discoverer or inventor: William Herschel
time of discovery or invention: 1784-00-00
galaxy morphological type: SAB(rs)cd
apparent magnitude: 9.338
right ascension: 90.2831792
declination: -23.6723194
redshift: 0.006148
radial velocity: 1823
epoch: J2000.0

Sources (1)

fr.wikipedia.org

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Encyclopedic overview

NGC 2139 is a barred spiral galaxy in the constellation of Lepus. It was discovered on November 17, 1784, by the German-English astronomer William Herschel. The galaxy is located at a distance of 120.6 million light-years (36.98 Mpc) from the Sun and is receding with a radial velocity of 1,836 km/s.

The overall form of this galaxy is irregular with spiral arms and the appearance of tidal features, suggesting a potential recent merger event. There is no central bulge of significance. The morphological classification is SAB(rs)cd, which indicates a barred spiral galaxy (SAB) with a transitional inner ring structure (rs) and loosely wound spiral arms (cd). It is a star forming galaxy with a formation rate of 3.8 M☉·yr. There is a plume extending to the south of the galaxy.

Excerpted from Wikipedia’s “Q1047119” article, available under the CC BY-SA 4.0 licence.

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