NGC 604 is an H II region in the Triangle Galaxy . It was discovered by William Herschel on September 11, 1784. This is one of the largest H II regions in the Local Group of Galaxies . With an estimated distance to the galaxy of 2.7 million St. years , its largest size is about 1,500 St. years (460 pc ), which is more than 40 times the size of the visible part of the Orion Nebula . Its luminosity is 6300 times greater than the luminosity of the Orion Nebula , and if it were at the same distance, it would overshadow Venus . As in all emission nebulae , the gas is ionized by a cluster of massive stars in the center.
| NGC 604 | |
|---|---|
| area H II | |
 | |
| Research history | |
| Discoverer | William Herschel |
| opening date | September 11, 1784 |
| Designations | NGC 604 |
| Observational data ( Age J2000.0 ) | |
| Right ascension | |
| Declination | |
| Visible magnitude (V) | 14.0 |
| Visible Dimensions (V) | 1.95 ' |
| Constellation | Triangle |
| Absolute magnitude (V) | –13.8 |
See also
- List of Messier objects
- New shared directory
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
- List of NGC 604 publications