Bubble Nebula (NGC 6822)
The Bubble Nebula in Barnard's Galaxy has the official designation of Hubble 1925 I as it was the first (Roman numeral 1) object recorded in a paper by Hubble 1925. It includes areas of bright H II emission. It is located north-west of the larger Hubble 1925 III.
| Emission nebula | |
|---|---|
| H II region | |
The Bubble Nebula (upper left) seen with the Ring Nebula (lower right) | |
| Observation data: J2000 epoch | |
| Right ascension | 19h 44m 31.8s |
| Declination | −14° 41′ 57″ |
| Distance | 1.63 ± 0.03 Mly (500 ± 10 kpc) ly |
| Apparent magnitude (V) | 15 |
| Apparent dimensions (V) | 48″ × 32″ |
| Constellation | Sagittarius |
| Physical characteristics | |
| Radius | ~379 ly (116.3 pc) (estimated) ly |
| Designations | Hubble 1925 I, Hubble I, MCG -02-50-002, |
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