Galaxy · Elliptical
IC 100
IC 100 is a galaxy in the direction of the constellation Cetus, 244.9 million light-years away.
| Type | Elliptical |
|---|---|
| Constellation | Cetus |
| Distance | 244.9 million light-years (75.10 Mpc) |
| Diameter | 99,200 light-years · 1.1 × the Milky Way |
| Absolute magnitude | magnitude −20.95 |
| Apparent magnitude | magnitude 13.43 |
| Luminosity | 1 × the Milky Way |
| Right ascension (J2000) | 1h 22m 54.0s |
| Declination (J2000) | −4° 38′ 35″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.43. Visible from the whole Southern Hemisphere and north to latitude 85° N. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 245 million years ago. At that time complex animals were spreading through the seas and over the land; there were no dinosaurs yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 4,345.1 billion years.