NGC 6664

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Open star cluster
NGC 6664
AladinLite
Constellation sign
Position
equinox : J2000.0
Right ascension 18 h 36 m 33.3 s
declination -08 ° 13 ′ 15 ″
Appearance

classification III2m
Brightness  (visual) 7.8 likes
Angular expansion 12.0 '
Physical data

Affiliation Milky Way
Redshift 0.000062 (± 0.000001)
Radial velocity 18.6 (± 0.4) km / s
distance  6,200 ly
history
Discovered by William Herschel
Discovery time June 16, 1784
Catalog names
 NGC  6664 • C 1834-082 • OCl 68 •  Mel  209 •  Cr  385 • Lund 1834-082 •  GC  4426 •  H  VIII 12 •  h  3754 •

NGC 6664 is an open cluster of Trumpler type III2m in the constellation Shield on the ecliptic . It has an apparent magnitude of 7.8 mag and an angular diameter of 12 '. The cluster is around 6,200 light years from the solar system.

The object was discovered on June 16, 1784 by William Herschel .

Individual evidence

  1. NASA / IPAC EXTRAGALACTIC DATABASE
  2. a b c SEDS : NGC 6664
  3. http://www.sterrenwacht.eu/H400-364-NGC6664.htm
  4. Seligman