IC 3356
| Galaxy IC 3356 |
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| IC 3356 | |
| AladinLite | |
| Constellation | Virgin |
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Position equinox : J2000.0 , epoch : J2000.0 |
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| Right ascension | 12 h 26 m 50.493 s |
| declination | + 11 ° 33 ′ 32.48 ″ |
| Appearance | |
| Morphological type | SmIV / HII |
| Brightness (visual) | 14.6 mag |
| Brightness (B-band) | 15.1 mag |
| Angular expansion | 1.5 ′ × 0.9 ′ |
| Position angle | 90 ° |
| Surface brightness | 14.8 mag / arcmin² |
| Physical data | |
| Affiliation | Virgo cluster NGC 4472 group LGG 292 |
| Redshift | 0.003669 ± 0.000002 |
| Radial velocity | 1100 ± 1 km / s |
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Stroke distance v rad / H 0 |
(47 ± 3) x 10 6 ly (14.3 ± 1.0) Mpc |
| history | |
| discovery | Royal Harwood Frost |
| Discovery date | May 7, 1904 |
| Catalog names | |
| IC 3356 • UGC 7547 • PGC 40761 • CGCG 070-084 • VCC 950 • HIPASS J1226 + 11 • VPC 505 • EVCC 625 | |
IC 3356 is an irregular galaxy with extensive star formation regions of the Hubble type Im in the constellation Virgo north of the ecliptic . It is an estimated 47 million light years away from the Milky Way and about 20,000 light years across. It is listed as a member of the Virgo galaxy cluster under catalog number VCC 950 .
The galaxies IC 3331 , IC 3346 , IC 3358 , IC 3381 are located in the same area of the sky .
The object was discovered by Royal Harwood Frost on May 7, 1904 .