Galaxy · Spiral
IC 4808
IC 4808 is a galaxy in the direction of the constellation Corona Australis, 236.8 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Corona Australis |
| Distance | 236.8 million light-years (72.59 Mpc) |
| Diameter | 150,300 light-years · 1.7 × the Milky Way |
| Absolute magnitude | magnitude −21.95 |
| Apparent magnitude | magnitude 12.35 |
| Luminosity | 2.6 × the Milky Way |
| Right ascension (J2000) | 19h 01m 07.6s |
| Declination (J2000) | −45° 18′ 49″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.35. Visible from the whole Southern Hemisphere and north to latitude 45° N. South of latitude 45° S it never sets. It stands highest at midnight in July, 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 4,199.9 billion years.