NGC 5084

lenticular galaxy in the constellation Virgo

Astronomical data · SIMBAD

Object type: Sy2
Redshift: z = 0.005742784337886553
Coordinates: RA 200.0705° · Dec -21.8276°

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Key facts

Constellation: Virgo
Right ascension: 13 20 16.8346
Declination: −21 ° 49 ′ 38.416 ″
Redshift: 0.005 741 ± 0.000 010
Heliocentric radial velocity: 1,721 ± 3 km/s
Galactocentric velocity: 1,599 ± 6 km/s
Distance: 81.87 ± 5.871 Mly (25.1 ± 1.8 Mpc ) h , 0.6774 , ( Comoving ) , 97 Mly (29.74 Mpc ) h , 0.6774 , ( Light-travel )
Group or cluster: NGC 5084 Group
Magnitude j: 8.014 ± 0.018
Magnitude h: 7.256 ± 0.020
Magnitude k: 7.058 ± 0.027
Type: S0
Mass: (6–10) × 10 M ☉
Size: 769,500 ly × 115,430 ly, (235.93 kpc × 35.39 kpc), ( diameter ; 90% total B-band light ) , 189,760 ly × 72,048 ly, (58.18 kpc × 22.09 kpc), ( diameter ; "total" magnitude )
Apparent size v: 12.02 ′ × 2.75 ′
Notable features: Supermassive disk galaxy

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Wikidata facts

Instance of: lenticular galaxy
Constellation: Virgo
Distance from Earth: 19.07
Image: N5084s.jpg

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catalog code: LEDA 46525
Commons category: NGC 5084
discoverer or inventor: William Herschel
time of discovery or invention: 1785-03-10
apparent magnitude: 7.058
galaxy morphological type: S...
redshift: 0.005761
right ascension: 200.0705125
declination: -21.8275778
radial velocity: 1739
epoch: J2000.0

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Encyclopedic overview

NGC 5084 is a Seyfert 2 lenticular galaxy in the constellation of Virgo. It is located at a distance of about 25.1 megaparsecs (81.9 million light-years) from Earth, which, given its apparent dimensions using the 90% total light definition, means that NGC 5084 is 236 kiloparsecs (770,000 light-years) across. It is one of the largest and most massive galaxies in the Virgo Supercluster. William Herschel discovered it on March 10, 1785. It is a member of the NGC 5084 Group of galaxies, which is a member of the Virgo II Groups, a series of galaxies and galaxy clusters strung out from the southern edge of the Virgo Supercluster. The galaxy is seen nearly edge-on, with inclination 86°, and features a warped disk and large quantities of HI gas extending along the disk, probably accumulated after multiple accretions of smaller galaxies. NGC 5084 also possess an active galactic nucleus.

Mass and size estimates

Excerpted from Wikipedia’s “NGC 5084” article, available under the CC BY-SA 4.0 licence.

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