Galaxy · Spiral
NGC 403
NGC 403 is a galaxy in the direction of the constellation Pisces, 237.2 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Pisces |
| Distance | 237.2 million light-years (72.71 Mpc) |
| Diameter | 186,900 light-years · 2.1 × the Milky Way |
| Absolute magnitude | magnitude −22.13 |
| Apparent magnitude | magnitude 12.18 |
| Luminosity | 3.1 × the Milky Way |
| Right ascension (J2000) | 1h 09m 14.2s |
| Declination (J2000) | +32° 45′ 08″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.18. Visible from the whole Northern Hemisphere and south to latitude 57° S. North of latitude 57° 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 237 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 4,206.9 billion years.