NGC 1664

NGC 1664
NGC 1664
Observation data (J2000 epoch)
Right ascension04h 51m 06.(0)s[1]
Declination+43° 40′ 3(0)″[1]
Distance4,200 ± 150 ly (1,289 ± 47 pc)[2]
Apparent magnitude (V)7.6[3]
Apparent dimensions (V)18.0′[3]
Physical characteristics
Mass640[4] M☉
Other designationsC0447+436, Collinder 56, Lund 143, Melotte 27, OCL 411, Raab 19 [5]
Associations
ConstellationAuriga[3]
See also: Open cluster, List of open clusters
Map showing the location of NGC 1664

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 43 ly (13.2 pc).[4]

NGC 1664 is a somewhat young cluster, with an age of 675 ± 50 Myr, and is dynamically relaxed.[2] It is located some 4,200 light-years away, or about 1.3 kpc.[2] Born outside of the solar circle, it orbits the center of the Milky Way every 244 million years.[2]

  1. ^ a b Cite error: The named reference MNRAS399_4_2146 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Koc was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference O'Meara 2007 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference aa477_1_165 was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Raab 1922 was invoked but never defined (see the help page).