Open Cluster NGC 6231
Physical Properties
| Designation | NGC 6231 |
| Type | OCL (I3p) |
| Right Ascension (J2000.0) | 16h 54m 09.8s |
| Declination (J2000.0) | -41° 49' 30" |
| Diameter | 14 arcmin |
| Photographic (blue) magnitude | 2.8 mag |
| Visual magnitude | 2.6 mag |
| Metric Distance | 1.250 kpc |
| Dreyer Description | Cl, B, cL, pRi, st 10…13 |
| Identification, Remarks | OCL 997, ESO 332-SC6 |
Finder Chart
The open cluster NGC 6231 is located in the constellation Scorpius, just half a degree above the two stars ζ1 and ζ2 Scorpii. Unfortunately it is not not visible from central Europe. On 4 June it in opposition with the Sun and is therefore highest in the sky at local midnight.
