| Reflection nebula | |
|---|---|
|   | |
| Observation data: J2000 epoch | |
| Right ascension | 16h 11m 58.6s | 
| Declination | −19° 27′ 17″ | 
| Distance | 400 ly | 
| Constellation | Scorpius | 
| Physical characteristics | |
| Radius | 40 ly | 
| Designations | IC 4592, Blue Horsehead Nebula | 
IC 4592 (also known as the Blue Horsehead Nebula) is a reflection nebula in the constellation of Scorpius that is lit by Nu Scorpii.