EntityQ1050084· pop 29· linked from 426 articles

NGC 2642

galaxy

In the Vinony graph

Within Vinony's link graph, NGC 2642 is referenced by 426 other articles, and connects out to list of stars in Hydra, light-year and parsec.

It sits within the topics Astronomical objects discovered in 1830, Barred spiral galaxies and Discoveries by John Herschel.

Its subject is documented across 28 Wikipedia language editions.

Key facts

Constellation: Hydra
Right ascension: 08 40 44.3818
Declination: −04 ° 07 ′ 18.011 ″
Heliocentric radial velocity: 4339 ± 5 km/s
Distance: 222.8 ± 15.6 Mly (68.32 ± 4.79 Mpc )
Type: SB(r)bc
Size: ~140,800 ly (43.17 kpc ) (estimated)
Apparent size v: 2.0′ × 1.8′

via Wikipedia infobox

Wikidata facts

Instance of: spiral galaxy
Constellation: Hydra
Distance from Earth: 62.70
Image: NGC 2642 SDSS.jpg

Show 11 more facts

catalog code: Gaia DR2 5761747972464458240
discoverer or inventor: John Frederick William Herschel
time of discovery or invention: 1830-02-19
apparent magnitude: 12.277
radial velocity: 4347.0
galaxy morphological type: Sbc
Commons category: NGC 2642
right ascension: 130.18489557076220
declination: -4.12167964242070
redshift: 0.014483
epoch: J2000.0

Sources (1)

fr.wikipedia.org

via Wikidata · CC0

~1 min read

Encyclopedic overview

NGC 2642 is a barred spiral galaxy in the constellation of Hydra. Its velocity with respect to the cosmic microwave background is 4632 ± 21 km/s, which corresponds to a Hubble distance of 68.32 ± 4.79 Mpc (~223 million light-years). It was discovered by British astronomer John Herschel on 19 February 1830.

According to the SIMBAD database, NGC 2642 is a Seyfert I galaxy, i.e. it has a quasar-like nuclei with very high surface brightnesses whose spectra reveal strong, high-ionisation emission lines, but unlike quasars, the host galaxy is clearly detectable.

Excerpted from Wikipedia’s “NGC 2642” article, available under the CC BY-SA 4.0 licence.