NGC 3646
| Galaxy NGC 3646 |
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|---|---|
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|
| SDSS recording | |
| AladinLite | |
| Constellation | lion |
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Position equinox : J2000.0 , epoch : J2000.0 |
|
| Right ascension | 11 h 21 m 43.1 s |
| declination | + 20 ° 10 ′ 10 ″ |
| Appearance | |
| Morphological type | SA: (r) bc / pec / (ring) |
| Brightness (visual) | 10.8 mag |
| Brightness (B-band) | 11.8 mag |
| Angular expansion | 3 ′, 9 × 2 ′, 2 |
| Position angle | 50 ° |
| Surface brightness | 13.0 mag / arcmin² |
| Physical data | |
| Redshift | 0.014170 +/- 0.000017 |
| Radial velocity | 4248 ± 5 km / s |
|
Stroke distance v rad / H 0 |
(187 ± 13) x 10 6 ly (57.4 ± 4.0) Mpc |
| history | |
| discovery | Wilhelm Herschel |
| Discovery date | February 15, 1784 |
| Catalog names | |
| NGC 3646 • UGC 6376 • PGC 34836 • CGCG 096-034 • MCG + 03-29-37 • 2MASX J11214310 + 2010103 • GC 2389 • H III 15 • h 866 • LDCE 0801 NED002 | |
NGC 3646 is a spiral galaxy from the Hubble type Sbc with an outer ring in the constellation Leo on the ecliptic , an estimated 187 million light-years of the Milky Way is removed.
The object was discovered by Wilhelm Herschel on February 15, 1784 .