NGC 3949 explained

NGC 3949
Epoch:	J2000
Constellation Name:	Ursa Major
Z:	800 ± 1 km/s
Dist Ly:	NaNMpc
Type:	SA(s)bc
Appmag V:	11.5
Size V:	2.9 × 1.7
Size:	~14.66kpc (estimated)
Names:	UGC 6869, PGC 37290

NGC 3949 is an unbarred spiral galaxy in the constellation Ursa Major, approximately 50 million light-years away from the Earth. It was discovered by German-British astronomer William Herschel on 5 February 1788.^[1]

NGC 3949 is a member of the M109 Group, a group of galaxies located in the constellation Ursa Major that may contain over 50 galaxies. The brightest galaxy in the group is the spiral galaxy M109.^{[2] [3] [4]}

One supernova has been observed in NGC 3949: SN 2000db (type II, mag. 14.3).^{[5] [6]}

Notes and References

1. Web site: NGC 3949 . Seligman . Courtney . Celestial Atlas . 9 August 2024 .
2. Book: R. B. Tully . 1988 . Nearby Galaxies Catalog . . Cambridge . 978-0-521-35299-4.
3. A. Garcia . General study of group membership. II - Determination of nearby groups . Astronomy and Astrophysics Supplement . 1993 . 100 . 47–90 . 1993A&AS..100...47G.
4. G. Giuricin . C. Marinoni . L. Ceriani . A. Pisani . Nearby Optical Galaxies: Selection of the Sample and Identification of Groups . Astrophysical Journal . 2000 . 543 . 1 . 178–194 . 2000ApJ...543..178G . 10.1086/317070. astro-ph/0001140 . 9618325 .
5. Web site: NASA/IPAC Extragalactic Database . Results for NGC 3949 . 2006-11-16.
6. Web site: Transient Name Server . Entry for SN 2000db . 9 August 2024.