NGC 2804
Sign in to saveAlso known as New General Catalogue 2804, IC 2455
lenticular galaxy in the constellation Cancer
Key facts
- Constellation
- Cancer
- Right ascension
- 09 16 50.0173
- Declination
- +20 ° 11 ′ 54.631 ″
- Heliocentric radial velocity
- 8293 ± 3 km/s
- Distance
- 412.8 ± 28.9 Mly (126.55 ± 8.86 Mpc )
- Type
- S0
- Size
- ~226,100 ly (69.31 kpc ) (estimated)
- Apparent size v
- 1.4′ × 1.2′
via Wikipedia infobox
Wikidata facts
- Instance of
- low-ionization nuclear emission-line region
- Constellation
- Cancer
- Distance from Earth
- 119.57
- Image
- NGC 2804 SDSS.jpg
Show 11 more facts
- catalog code
- LEDA 26196
- galaxy morphological type
- Sab
- discoverer or inventor
- John Frederick William Herschel
- time of discovery or invention
- 1827-02-24
- redshift
- 0.028099
- apparent magnitude
- 11.914
- Commons category
- NGC 2804
- right ascension
- 139.2083583
- declination
- 20.1985778
- radial velocity
- 8181
- epoch
- J2000.0
via Wikidata · CC0
~1 min read
Encyclopedic overview
NGC 2804 is a lenticular galaxy in the constellation of Cancer. Its velocity with respect to the cosmic microwave background is 8580 ± 20 km/s, which corresponds to a Hubble distance of 126.55 ± 8.86 Mpc (~413 million light-years). It was discovered by British astronomer John Herschel on 24 February 1827. This galaxy was also observed by the French astronomer Stéphane Javelle on 9 April 1896, and was later added to the Index Catalogue as IC 2455.
According to the SIMBAD database, NGC 2804 is a LINER galaxy, i.e. a galaxy whose nucleus has an emission spectrum characterized by broad lines of weakly ionized atoms.
Excerpted from Wikipedia’s “NGC 2804” article, available under the CC BY-SA 4.0 licence.