Galaxy · Lenticular
NGC 813
NGC 813 is a galaxy in the direction of the constellation Hydrus, 377.0 million light-years away.
| Type | Lenticular |
|---|---|
| Constellation | Hydrus |
| Distance | 377.0 million light-years (115.60 Mpc) |
| Diameter | 145,200 light-years · 1.7 × the Milky Way |
| Absolute magnitude | magnitude −22.27 |
| Apparent magnitude | magnitude 13.04 |
| Luminosity | 3.5 × the Milky Way |
| Right ascension (J2000) | 2h 01m 36.1s |
| Declination (J2000) | −68° 26′ 21″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.04. Visible from the whole Southern Hemisphere and north to latitude 22° N. South of latitude 22° S 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 377 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 6,688.4 billion years.