The Barnard loop , or Orion loop , is an emission nebula in the constellation Orion . It is part of the Orion cloud .
| Barnard's loop | |
|---|---|
| emission nebula | |
 | |
| Research history | |
| Discoverer | Herschel, William |
| opening date | December 1, 1786 |
| Designations | Sh 2-276 |
| Observational data ( Age J2000.0 ) | |
| Right ascension | |
| Declination | |
| Distance | 1600 St. years old |
| Visible Dimensions (V) | 1200 arcminutes |
| Constellation | Orion |
| physical characteristics | |
| Radius | 150 St. years old |
The first observation of the nebula can be considered the observations of William Herschel on December 1, 1786 [1] . Later in 1895 , she was discovered and photographed by Edward Emerson Barnard , who gave her the name "Orion's Loop" [2] . Another name is Sh 2-276.
The origin of the nebula is associated with a series of supernova explosions that occurred 2-3 million years ago. The glow of the nebula is supported by radiation from a group of young hot stars located nearby.
In Culture
The name of the nebula inspired the creators of the Soviet sci-fi film Orion 's Loop .
Notes
- ↑ Barnard's Loop (inaccessible link) . Archived on November 19, 2005.
- ↑ Barnard's Loop (Sh 2-276)