| NGC 1664 | |
| Class: | Open cluster |
| Appmag V: | 7.6 |
| Size V: | 18.0′ |
| Mass Msol: | 640 |
| Names: | C0447+436, Collinder 56, Lund 143, Melotte 27, OCL 411, Raab 19 |
NGC 1664 is an open cluster in the constellation of Auriga. It contains stars with a total of around 640 solar masses with a tidal radius of 13.2pc.
NGC 1664 is a somewhat young cluster, with an age of 675 ± 50 Myr, and is dynamically relaxed. It is located some 4,200 light-years away, or about 1.3 kpc. Born outside of the solar circle, it orbits the center of the Milky Way every 244 million years.
