NGC 7243

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Open star cluster
NGC 7243
NGC 7243 (Photo: Serge Corrotte)
NGC 7243 (Photo: Serge Corrotte)
AladinLite
Constellation lizard
Position
equinox : J2000.0
Right ascension 22 h 15 m 08.5 s
declination + 49 ° 53 ′ 51 ″
Appearance

classification IV2p
Physical data

Affiliation Milky Way
Redshift −0.000042
distance  2,600 ly
Absolute brightness 6.4 mag
diameter 16 years
Age > 100 million years
history
Discovered by William Herschel
Discovery time September 26, 1788
Catalog names
 NGC  7243 • C 16 • OCl 221 •  Mel  240 •  Cr  448 • Lund 1009 •  GC  4773 •  H  VIII-75 •  h  2155 •

NGC 7243 is an open cluster of Trumpler type IV2p in the constellation Lizard on the northern sky . It has a diameter of 21 'and an apparent magnitude of +6.40 mag. The cluster is 2,600 light-years away, around 16 light-years in diameter, and just over 100 million years old.

The object was discovered on September 26, 1788 by William Herschel .

Individual evidence

  1. ↑ Klaus-Peter Schröder in: Stars and Space September 2012 p. 72f
  2. ↑ http://cseligman.com/text/atlas/ngc72.htm#7243
  3. ↑ SIMBAD Database