Galaxy · Spiral
IC 154
IC 154 is a galaxy in the direction of the constellation Pisces, 258.3 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Pisces |
| Distance | 258.3 million light-years (79.20 Mpc) |
| Diameter | 132,900 light-years · 1.5 × the Milky Way |
| Absolute magnitude | magnitude −21.39 |
| Apparent magnitude | magnitude 13.10 |
| Luminosity | 1.6 × the Milky Way |
| Right ascension (J2000) | 1h 45m 16.3s |
| Declination (J2000) | +10° 38′ 58″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.10. 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 258 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 4,582.3 billion years.