| Emission nebula | |
|---|---|
| Planetary nebula | |
 The Abell 33nebula as seen fromMount Lemmon Observatory | |
| Observation data:J2000epoch | |
| Right ascension | 09h 39m 09.2s |
| Declination | −02° 48′ 35″ |
| Distance | 2.7kly (0.83kpc) ly |
| Apparent magnitude (V) | +12.9 |
| Constellation | Hydra |
| Notable features | Foreground star gives it a "diamond ring" effect |
| Designations | PNG 238.0+34.8, PK 238+34.1, ARO 65 |
| See also:Lists of nebulae | |
Abell 33 (Also calledA33 or theDiamond ring nebula) is a faint sphericalplanetary nebula located 2700 light years away in theconstellation of Hydra. It lies just behind the starHD 83535 which has no relation to the nebula.[1] Thestar HD 83535 is also responsible for the "diamond ring" effect seen in the photograph.
Thenebula gets itscoloration from theOlll emissions (doubly ionized oxygen). The nebula is faint making it difficult to be seen using atelescope. The spherical shape of Abell 33 is mainly caused by its central star not having much of a spin.[2] The nebula shares similar morphology to another nebula with the same spherical shape, theOwl Nebula (M 97) but is much darker than the owl nebula.[3]
Media related toAbell 33 at Wikimedia Commons| Stars |
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