Galaxy · Spiral
IC 188
IC 188 is a galaxy in the direction of the constellation Triangulum, 233.4 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Triangulum |
| Distance | 233.4 million light-years (71.56 Mpc) |
| Diameter | 81,800 light-years · 0.94 × the Milky Way |
| Absolute magnitude | magnitude −20.62 |
| Apparent magnitude | magnitude 13.65 |
| Luminosity | 0.77 × the Milky Way |
| Right ascension (J2000) | 2h 01m 46.5s |
| Declination (J2000) | +26° 32′ 49″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.65. Visible from the whole Northern Hemisphere and south to latitude 63° S. North of latitude 63° N it never sets. 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 233 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 4,140.3 billion years.