Sh2-1
Sh2-1, also known as Sharpless 1, is the combination of a diffuse HII emission nebula and reflection nebula in the constellation of Scorpius with Pi Scorpii at its center. It appears as a modest brightness making it one of the easier Sharpless catalog objects for amateur astronomers to view. It features an apparent central star inside the nebulosity however it is not part its system nor a left over remnant.
| Reflection nebula | |
|---|---|
.jpg.webp) Sharpless 1 (red emission nebula mixed with the reflection nebula (vdB 99) around Pi Scorpii and LBN 1094 (south of Pi Scorpii). To the east of Sh2-1 are LBN 1092 and LBN 1093. | |
| Observation data: J2000 epoch | |
| Right ascension | 15h 58m 51.2s[1] |
| Declination | −26° 07′ 14″[1] |
| Distance | 650[2] ly (200 pc) |
| Apparent dimensions (V) | 2° 30'[1] |
| Constellation | Scorpius |
| Designations | Sh2-1 |
The nebulous area is fairly large with an irregular shape appearing as a 180° arc shape surrounding a central star.[3] The remnant has an apparent diameter that covers approximately 150' and an estimated distance of approximately 650ly away.
References
- "VizieR Detailed Page". Centre de Données astronomiques de Strasbourg. 20 December 2013.
- "Sh 2-1". Galaxy Map. 16 September 2013.
- "CCD Images of the Sharpless Catalog". Dean Salman. 20 December 2013.
External links
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