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 43ly (13.2pc).[4]
NGC 1664 is a somewhat young cluster, with an age of 675 ± 50 Myr, and is dynamically relaxed.[3] It is located some 4,200 light-years away, or about 1.3 kpc.[3] Born outside of the solar circle, it orbits the center of the Milky Way every 244 million years.[3]
Koç, Seliz; Yontan, Talar; Bilir, Selçuk; Canbay, Remziye; Ak, Tansel; Banks, Timothy; Ak, Serap; Paunzen, Ernst (2022). "A Photometric and Astrometric Study of the Open Clusters NGC 1664 and NGC 6939". The Astronomical Journal. 163 (4): 191. arXiv:2202.11126. Bibcode:2022AJ....163..191K. doi:10.3847/1538-3881/ac58a0. S2CID247058424.
Piskunov, A. E.; etal. (January 2008), "Tidal radii and masses of open clusters", Astronomy and Astrophysics, 477 (1): 165–172, Bibcode:2008A&A...477..165P, doi:10.1051/0004-6361:20078525.
Rabb, S. (1922), "Research on open clusters", Meddelanden fran Lunds Astronomiska Observatorium Series II, 28: 3–48, Bibcode:1922MeLuS..28....3R.
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