Open Cluster NGC 1664
History
This open cluster was discovered by William Herschel on 24 October 1786 using his 18.7-inch speculum reflector with 20 feet focal length. He listed it as VIII 59 with the notes: «A cluster of coarsely scattered pretty large stars, not very rich.» [464]
Physical Properties
| Designation | NGC 1664 |
| Type | OCL (III1p) |
| Right Ascension (J2000.0) | 04h 51m 05.4s |
| Declination (J2000.0) | +43° 40' 34" |
| Diameter | 18 arcmin |
| Visual magnitude | 7.6 mag |
| Metric Distance | 1.199 kpc |
| Dreyer Description | Cl, lRi, lC, pL |
| Identification, Remarks | WH VIII 59; GC 907; OCL 411 |
Finder Chart
The open cluster cluster NGC 1664 can be found in the constellation Auriga. On 7 December it in opposition with the Sun and is therefore highest in the sky at local midnight.
