Sh 2-1
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Sh 2-1, 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, Pi Scorpii,[3] inside the nebulosity however it is not part its system nor a left over remnant.[citation needed]
| Reflection nebula | |
|---|---|
| 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 | Sh 2-1 |
The nebulous area is fairly large with an irregular shape appearing as a 180° arc shape surrounding a central star.[4] The remnant[clarification needed] has an apparent diameter that covers approximately 150' and an estimated distance of approximately 650ly away.
