Dumbbell Nebula
The Dumbbell Nebula (also known as the Apple Core Nebula, Messier 27, and NGC 6853) is a planetary nebula (nebulosity surrounding a white dwarf) in the constellation Vulpecula, at a distance of about 1360 light-years. It was the first such nebula to be discovered, by Charles Messier in 1764. At its brightness of visual magnitude 7.5 and diameter of about 8 arcminutes, it is easily visible in binoculars and is a popular observing target in amateur telescopes.
| Emission nebula | |
|---|---|
| Planetary nebula | |
Dumbbell Nebula (Messier 27) in Vulpecula | |
| Observation data: J2000 epoch | |
| Right ascension | 19h 59m 36.319s |
| Declination | +22° 43′ 16.312″ |
| Distance | 389+15 −6 pc |
| Apparent magnitude (V) | 7.4 |
| Apparent dimensions (V) | 8.0′ × 5.6′ |
| Constellation | Vulpecula |
| Physical characteristics | |
| Radius | 1.44+0.21 −0.16[a] ly |
| Absolute magnitude (V) | −0.6+0.4 −0.3[d] |
| Notable features | Central star radius is among the largest known for a white dwarf. |
| Designations | NGC 6853, M 27, Diabolo Nebula, Dumb-Bell Nebula, |
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