Galaxy · Spiral
IC 156
IC 156 is a galaxy in the direction of the constellation Pisces, 257.4 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Pisces |
| Distance | 257.4 million light-years (78.93 Mpc) |
| Diameter | 119,800 light-years · 1.4 × the Milky Way |
| Absolute magnitude | magnitude −21.55 |
| Apparent magnitude | magnitude 12.94 |
| Luminosity | 1.8 × the Milky Way |
| Right ascension (J2000) | 1h 45m 29.2s |
| Declination (J2000) | +10° 33′ 10″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.94. Visible from the whole Northern Hemisphere and south to latitude 79° S. North of latitude 79° 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 257 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 4,566.7 billion years.