Astronomy:NGC 7243

Short description: Open cluster in the constellation Lacerta

NGC 7243
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, Cr 448

NGC 7243 (also known as Caldwell 16) is an open cluster and Caldwell object in the constellation Lacerta. It shines at magnitude +6.4. Its celestial coordinates are RA  22^h 15.3^m, 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.

Map showing location of NGC 7243

References

• Pasachoff, Jay M. (2000). "Atlas of the Sky". Stars and Planets. New York, NY: Peterson Field Guides. pp. 578. ISBN 978-0-395-93432-6. 
• Caldwell-Moore, Sir Patrick (2003). Firefly Atlas of the Universe. Firefly Books Limited. ISBN 978-1-55297-819-1. 

External links

• SEDS – NGC 7243
• "NGC 7243". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=NGC+7243. 
• VizieR – NGC 7243
• NED – NGC 7243
• NGC 7243 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images