NGC 6643 (other designations are UGC 11218 , MCG 12-17-21 , ZWG 340.43 , KARA 850 , IRAS18212 + 7432 , PGC 61742 ) is a spiral galaxy ( Sc ) in the constellation Dragon .
| NGC 6643 | |
|---|---|
| Galaxy | |
| Research history | |
| opening date | 1858 |
| Designations | NGC 6643 , UGC 11218 , MCG 12-17-21 , ZWG 340.43 , KARA 850 , IRAS18212 + 7432 , PGC 61742 |
| Observational data ( Age J2000.0 ) | |
| Constellation | The Dragon |
| Right ascension | |
| Declination | |
| Visible dimensions | 3.7 '× 1.8' |
| Apparent magnitude m V | 11.0 |
| Photographic magnitude m B | 11.7 |
| Specifications | |
| Type of | Sc |
| Redshift | +0.004967 ± 0.000030 |
| Angular position | 38 ° |
| Surface brightness | 12.9 |
This object is one of those listed in the original edition of the New General Catalog .
Two supernova explosions were observed in this galaxy: SN 2008bo and SN 2008ij .
See also
- List of Messier objects
- New shared directory
Literature
- Debra Meloy Elmegreen, Frederick R. Chromey, Bradley A. Bissell, and Kelli Corrado. K'-Band Observations of Underlying Symmetric Structure in Flocculent Galaxies (Eng.) // The Astronomical Journal. - 1999. - DOI : 10.1086 / 301127 .
Links
- Information in English and French from the original “ New General Catalog ”
- Information (Eng.) From the Revised New General Catalog
- SIMBAD
- VizieR (English)
- NASA / IPAC Extragalactic Database
- NGC 6643 Publication List