NGC 7243

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NGC 7243
NGC 7243 .jpg
NGC 7243
Observation data (2000.0 epoch)
Constellation Lacerta
Right ascension 22h 15m 08.6s
Declination +49° 53′ 51″
Distance 2800 (860)
Apparent magnitude (V) +6.4
Apparent dimensions (V) 21′
Physical characteristics
Other designations Caldwell 16
See also: Open cluster, List of open clusters

NGC 7243, also Caldwell 16, is an open cluster and Caldwell object in the constellation Lacerta. It shines at magnitude +6.4. Its celestial coordinates are RA 22h 15.3m, dec +49° 53′. It is located near the naked-eye stars Alpha Lacertae, 4 Lacertae, an A-class double star, and planetary nebula IC 5217. It lies approximately 2,800 light-years away, and is thought to be just over 100 million years old, consisting mainly of white and blue stars.[1]

Map showing location of NGC 7243


  1. ^ "NGC 7243". eSky. Retrieved 2008-08-06. 


  • Pasachoff, Jay M. (2000). "Atlas of the Sky". Stars and Planets. New York, NY: Peterson Field Guides. p. 578. ISBN 0-395-93432-X. 
  • Caldwell-Moore, Sir Patrick (2003). Firefly Atlas of the Universe. Firefly Books Limited. ISBN 1-55297-819-2. 

External links[edit]

Coordinates: Sky map 22h 15m 08.6s, +49° 53′ 51″