Galaxy · Spiral
NGC 783
NGC 783 is a galaxy in the direction of the constellation Triangulum, 241.8 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Triangulum |
| Distance | 241.8 million light-years (74.14 Mpc) |
| Diameter | 138,100 light-years · 1.6 × the Milky Way |
| Absolute magnitude | magnitude −21.79 |
| Apparent magnitude | magnitude 12.56 |
| Luminosity | 2.3 × the Milky Way |
| Right ascension (J2000) | 2h 01m 06.6s |
| Declination (J2000) | +31° 52′ 57″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.56. Visible from the whole Northern Hemisphere and south to latitude 58° S. North of latitude 58° 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 242 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 4,289.6 billion years.