Galaxy · Barred spiral
NGC 477
NGC 477 is a galaxy in the direction of the constellation Andromeda, 273.8 million light-years away.
| Type | Barred spiral |
|---|---|
| Constellation | Andromeda |
| Distance | 273.8 million light-years (83.94 Mpc) |
| Diameter | 182,800 light-years · 2.1 × the Milky Way |
| Absolute magnitude | magnitude −21.52 |
| Apparent magnitude | magnitude 13.10 |
| Luminosity | 1.8 × the Milky Way |
| Right ascension (J2000) | 1h 21m 20.4s |
| Declination (J2000) | +40° 29′ 18″ |
| 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 50° S. North of latitude 50° 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 274 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 4,856.6 billion years.