Globular Cluster NGC 6569
History
The globular cluster NGC 6569 was discovered by William Herschel on 13 July 1784. He listed it as II 201 and noted: «Faint, pretty large, little brighter in the middle, resolvable.» [463] John Herschel listed the cluster as h 3736. On 3 August 1834 he described it as «globular; pretty bright; larg; round; gradually little brighter middle; 4' diameter, resolved into stars 15m.» He also noted that on 16 July 1836 the cluster was «Found in equatorial [5-inch refractor] in a zone review for double stars, where it appeared as a F, R neb 1' diam.» [463]
Physical Properties
| Designation | NGC 6569 |
| Type | GCL (VIII) |
| Right Ascension (J2000.0) | 18h 13m 38.9s |
| Declination (J2000.0) | -31° 49' 33" |
| Diameter | 6.4 arcmin |
| Visual magnitude | 8.4 mag |
| Metric Distance | 10.900 kpc |
| Dreyer Description | globular, cB, L, R, rrr, st 15… |
| Identification, Remarks | WH II 201; h 3736; GC 4389; GCL 91; ESO 456-SC77 |
Finder Chart
The globular cluster NGC 6569 is located in the constellation Sagittarius. It is on 23 June in opposition to the Sun. From Switzerland it can best be seen in the months May to September.
