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 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]
| NGC 7243 | |
|---|---|
 NGC 7243 | |
| Observation data (2000.0 epoch) | |
| 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 |
| Associations | |
| Constellation | Lacerta |
Notes
References
- Pasachoff, Jay M. (2000). "Atlas of the Sky". Stars and Planets. New York, NY: Peterson Field Guides. p. 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
Media related to NGC 7243 at Wikimedia Commons- SEDS – NGC 7243
- "NGC 7243". SIMBAD. Centre de données astronomiques de Strasbourg.
- VizieR – NGC 7243
- NED – NGC 7243
- NGC 7243 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
