Size comparison: Omega Centauri vs Milky Way

Size comparison between Omega Centauri and the Milky Way.

Omega Centauri is a globular cluster. This one is too small (even microscopic) to be visible in a comparison with the Milky Way. We note that despite a substantial number of stars contained in this cluster, it remains tiny compared to that of the stars present in our galaxy, which therefore has 25 thousand times more stars.

Object	Omega Centauri	Milky Way
Type	Globular cluster	Galaxy
Age	11.53 billion years	13.5 billion years
Diameter	172 light years	105,700 light years
Mean radius	86 light years	52,850 light years
Mass	4.05 × 1029 kg	1.6 × 1042 kg
Number of stars	10 million	250 billion
Right ascension	13h 26m 47.28s	17h 45m 39.9s
Declination	−47° 28′ 46.1″	−29° 00′ 28″

Note: if one of the objects is not visible, it just means that it is too tiny to be displayed compared to the other one.