NGC 225 is an open cluster in the constellation Cassiopeia. It is located roughly 2,200 light-years from Earth. It is about 100 to 150 million years old.[3]

NGC 225
NGC 225 in Cassiopeia
Observation data (J2000 epoch)
Constellation	Cassiopeia[1]
Right ascension	00h 43.7m [2]
Declination	+61° 47′[2]
Distance	2200 ly (676 pc[3])
Apparent magnitude (V)	7.0[2]
Apparent dimensions (V)	12 arcminute
Physical characteristics
Notable features	Image
Other designations	Cr 7, C 0040+615
See also: Open cluster, List of open clusters

The binary fraction, or the fraction of stars that are multiple stars, is 0.52.[3]

At the 2022 Eldorado Star Party amateur astronomer Will Young, a member of the Astronomical Society of South East Texas, dubbed this open cluster to feature the “Halloween Cat” asterism. A subgroup of brighter stars in this cluster appear to delineate a cat with forward facing eyes, arched back, and raised tail.

See also

• Open cluster
• List of NGC objects (1–1000)
• Cassiopeia (constellation)

References

External links

• Media related to NGC 225 at Wikimedia Commons
• NGC 225 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
• SEDS

На других языках

[de] NGC 225

[es] NGC 225

[ru] NGC 225