Galaxy · Barred spiral
IC 1823
IC 1823 is a galaxy in the direction of the constellation Triangulum, 241.7 million light-years away.
| Type | Barred spiral |
|---|---|
| Constellation | Triangulum |
| Distance | 241.7 million light-years (74.10 Mpc) |
| Diameter | 112,900 light-years · 1.3 × the Milky Way |
| Absolute magnitude | magnitude −20.90 |
| Apparent magnitude | magnitude 13.45 |
| Luminosity | 1 × the Milky Way |
| Right ascension (J2000) | 2h 38m 37.0s |
| Declination (J2000) | +32° 04′ 11″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.45. 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 4,287.3 billion years.