Galaxy · Elliptical
IC 1804
IC 1804 is a galaxy in the direction of the constellation Aries, 439.4 million light-years away.
| Type | Elliptical |
|---|---|
| Constellation | Aries |
| Distance | 439.4 million light-years (134.71 Mpc) |
| Diameter | 180,500 light-years · 2.1 × the Milky Way |
| Absolute magnitude | magnitude −22.25 |
| Apparent magnitude | magnitude 13.40 |
| Luminosity | 3.5 × the Milky Way |
| Right ascension (J2000) | 2h 29m 54.4s |
| Declination (J2000) | +23° 05′ 49″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.40. Visible from the whole Northern Hemisphere and south to latitude 67° S. North of latitude 67° 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 439 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 7,794.0 billion years.