Galaxy · Spiral
NGC 828
NGC 828 is a galaxy in the direction of the constellation Andromeda, 250.4 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Andromeda |
| Distance | 250.4 million light-years (76.77 Mpc) |
| Diameter | 131,600 light-years · 1.5 × the Milky Way |
| Absolute magnitude | magnitude −22.56 |
| Apparent magnitude | magnitude 11.87 |
| Luminosity | 4.6 × the Milky Way |
| Right ascension (J2000) | 2h 10m 09.6s |
| Declination (J2000) | +39° 11′ 25″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.87. Visible from the whole Northern Hemisphere and south to latitude 51° S. North of latitude 51° 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 250 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 4,441.8 billion years.