🔭 M101 — Pinwheel Galaxy

Galaxy in Ursa Major

M101, Pinwheel Galaxy is a galaxy in the constellation Ursa Major, with an apparent magnitude of about 7.9, roughly 20,750 thousand light-years away.

Data

Catalogue designation	M101
Common name	Pinwheel Galaxy
Object type	Galaxy
Constellation	Ursa Major
NGC / IC	NGC 5457
Apparent magnitude	7.9
Distance (approx.)	20,750 thousand light-years

What a galaxy is

A vast, gravitationally-bound system of stars, gas and dust — from small irregular collections to giant spirals containing a trillion suns. Most Messier galaxies are island universes far beyond the Milky Way.

Other Messier objects in Ursa Major: M40, M81, M82, M97, M108, M109.

Data: Messier catalogue & IAU constellations, via English Wikipedia (CC BY-SA 3.0) · stored statically.