Galaxy · Spiral
IC 4555
IC 4555 is a galaxy in the direction of the constellation Apus, 125.3 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Apus |
| Distance | 125.3 million light-years (38.41 Mpc) |
| Diameter | 62,400 light-years · 0.71 × the Milky Way |
| Absolute magnitude | magnitude −19.38 |
| Apparent magnitude | magnitude 13.54 |
| Luminosity | 0.25 × the Milky Way |
| Right ascension (J2000) | 15h 48m 14.8s |
| Declination (J2000) | −78° 10′ 44″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.54. Visible from the whole Southern Hemisphere and north to latitude 12° N. South of latitude 12° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out 125 million years ago. At that time dinosaurs ruled the Earth. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2,222.3 billion years.