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)
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.
Available in 28 languages
- Français
- Deutsch
- Русский
- Português
- Italiano
- العربية
- Azerbaijani
- Basque
- Belarusian
- Bosnian
- Chechen
- Croatian
- Egyptian Arabic
- Esperanto
- Kazakh
- Macedonian
- Nederlands
- Polski
via Wikidata sitelinks · CC0