NGC 2506

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Open star cluster
NGC 2506
NGC 2506 DSS.jpg
AladinLite
Constellation unicorn
Position
equinox : J2000.0
Right ascension 08 h 00 m 01.8 s
declination -10 ° 46 ′ 11 ″
Appearance

classification I2r
Brightness  (visual) 7.6 likes
Angular expansion 12
Physical data

Affiliation Milky Way
distance  11,250 ly
(3460 pc )
diameter 25–35 years
Age 2 billion years
history
Discovered by William Herschel
Discovery time February 23, 1791
Catalog names
 NGC  2506 • C 0757-106 • OCl 593 •  Mel  80 •  Cr  170 • Lund 415 •  GC  1611 •  H  VI 37 •  h  480 • Bennett 39, Caldwell 54

NGC 2506 is an open cluster of the type I2r in the constellation Unicorn in the southern sky . It has an angular extent of 12.0 'and an apparent magnitude of 7.6. A study from 2007 gives the distance to the solar system at 11,000 light years and a diameter of 25-35 light years. The age of the metal-poor cluster is estimated to be 2 billion years.

The object was discovered by William Herschel on February 23, 1791 .

Individual evidence

  1. ↑ NASA / IPAC EXTRAGALACTIC DATABASE
  2. ↑ a b c SEDS : NGC 2506
  3. ↑ WEBDA
  4. ↑ Seligman