NGC 2841
Sign in to saveAlso known as New General Catalogue 2841
spiral galaxy in the constellation Ursa Major
Key facts
- Constellation
- Ursa Major
- Right ascension
- 09 22 02.655
- Declination
- +50 ° 58 ′ 35.32 ″
- Heliocentric radial velocity
- 638 km/s
- Distance
- 46.0 ± 4.9 Mly (14.1 ± 1.5 Mpc )
- Type
- SAa
- Mass
- 7 × 10 M ☉ M ☉
- Size
- ~150,000 ly (~46 kpc )
- Apparent size v
- 8.1 ′ × 3.5 ′
- Notable features
- Flocculent galaxy with LINER nucleus
via Wikipedia infobox
Wikidata facts
- Distance from Earth
- 14.1
- Image
- Spiral Galaxy NGC 2841.jpg
Show 10 more facts
- galaxy morphological type
- SAa
- catalog code
- [VDD93] 91
- time of discovery or invention
- 1788-03-09
- apparent magnitude
- 9.099
- Commons category
- NGC 2841
- Commons gallery
- NGC 2841
- redshift
- 0.00190
- right ascension
- 140.5110625
- declination
- 50.9764778
- radial velocity
- 569
Sources (2)
via Wikidata · CC0
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Article
NGC 2841 is an unbarred spiral galaxy in the northern circumpolar constellation of Ursa Major. It was discovered on 9 March, 1788 by German-born astronomer William Herschel. J. L. E. Dreyer, the author of the New General Catalogue, described it as, "very bright, large, very much extended 151°, very suddenly much brighter middle equal to 10th magnitude star". Initially thought to be about 30 million light-years distant, a 2001 Hubble Space Telescope survey of the galaxy's Cepheid variables determined its distance to be approximately 14.1 megaparsecs, or 46 million light-years. The optical size of the galaxy is 8.1′ × 3.5′.
This is the prototype for the flocculent spiral galaxy, a type of spiral galaxy whose arms are patchy and discontinuous. The morphological class is SAa, indicating a spiral galaxy with no central bar and very tightly-wound arms. There is no grand design structure visible in the optical band, although some inner spiral arms can be seen in the near infrared. It is inclined by an angle of 68° to the line of sight from the Earth, with the major axis aligned along a position angle of 148°.