NGC 3982
| Galaxy NGC 3982 |
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|---|---|
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| Photo from the Hubble Space Telescope | |
| AladinLite | |
| Constellation | Big Bear |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 11 h 56 m 28.1 s |
| declination | + 55 ° 07 ′ 31 ″ |
| Appearance | |
| Morphological type | SAB (r) b: / HII / Sy2 |
| Brightness (visual) | 11.1 mag |
| Brightness (B-band) | 11.9 likes |
| Angular expansion | 2.3 ′ × 2 ′ |
| Position angle | 48 ° |
| Surface brightness | 12.6 mag / arcmin² |
| Physical data | |
| Affiliation | UMa cluster LGG 250 |
| Redshift | 0.003699 ± 0.000020 |
| Radial velocity | (1109 ± 6) km / s |
|
Stroke distance v rad / H 0 |
(53 ± 4) · 10 6 ly (16.3 ± 1.1) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | April 14, 1789 |
| Catalog names | |
| NGC 3982 • UGC 6918 • PGC 37520 • CGCG 269-019 • MCG + 09-20-036 • IRAS 11538 + 5524 • KUG 1153 + 554 • 2MASX J11562816 + 5507313 • GC 2620 • H IV 62 • h 1017 • LDCE 867 NED050 | |
NGC 3982 is an active bar-spiral galaxy with extensive star formation regions of the Hubble type SBb in the constellation Great Bear in the northern sky . It is estimated to be 53 million light years from the Milky Way and about 35,000 ly in diameter. The galaxy is a member of the Ursa Major Galaxy Cluster .
In the same area of the sky are u. a. the galaxies NGC 3972 , NGC 3977 , NGC 3980 , NGC 3990 .
Here the supernova SN 1998aq was observed.
The object was discovered on April 14, 1789 by the German-British astronomer Wilhelm Herschel .
Web links
- SIMBAD Astronomical Database
- Hubble Space Telescope
- Spiral Galaxy NGC 3982 Before Supernova - Astronomy Picture of the Day from November 3, 2003.
- Supernova SN 1998aq