NGC 2841 (Massimo Di Fusco)

NGC 2841

NGC 2841 is a spiral galaxy visible in the constellation Ursa Major, discovered by William Herschel in 1788. This galaxy was believed to be located approximately 11.1 Mpc (36 million light-years). A study carried out in 2001 by the Hubble Space Telescope on the Cepheid variables of the galaxy made it possible to obtain a more accurate estimate of the distance: 14.1 ± 1.5 Mpc (about 46 million light years). A new, more precise estimate of the distance was obtained in 2013 using a type Ia supernova that exploded in 1999, bringing the value to 14.6 ± 0.07 Mpc (about 48 million light years). Given the apparent angular size, the galaxy has a diameter of at least 112000 light years, slightly larger than that of the Milky Way, but higher estimates (obtained with less restrictive angular diameters) place it at around 150000 light years, therefore more similar to the Galaxy of Andromeda.
The galaxy NGC 2841 is the prototype of the so-called "flocculent galaxies", i.e. galaxies whose spiral arms are short and fragmented; in particular those of the galaxy NGC 2841 host many young and hot stars, with a low star formation rate.
It is a 10th magnitude galaxy classified SA(r)b, i.e. a spiral galaxy (SA) with a central ring (r) in which the contribution of the nucleus and the disk are equivalent (b). Furthermore, NGC 2841 is classified as a LINER galaxy, i.e. a galaxy that has low ionization compared to "normal" galaxies in the nuclear region.

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Status	Advanced success
Started	...
Astrometry.net job	9086218
PixInsight job	6CH1K283CMNENIVUFWOCM8PZC6GOJ3K9
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h22m06s.337
RA (top/left)	09h21m07s.488
RA (top/right)	09h21m08s.579
RA (bottom/right)	09h23m04s.471
RA (bottom/left)	09h23m04s.753

Dec (center)	+50°58′47″.77
Dec (top/left)	+51°10′56″.55
Dec (top/right)	+50°46′34″.29
Dec (bottom/right)	+50°46′37″.32
Dec (bottom/left)	+51°10′59″.70

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NGC 2841

NGC 2841

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NGC 2841

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