Galaxy · Spiral
IC 2103
IC 2103 is a galaxy in the direction of the constellation Mensa, 201.3 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Mensa |
| Distance | 201.3 million light-years (61.71 Mpc) |
| Diameter | 106,800 light-years · 1.2 × the Milky Way |
| Absolute magnitude | magnitude −20.64 |
| Apparent magnitude | magnitude 13.31 |
| Luminosity | 0.79 × the Milky Way |
| Right ascension (J2000) | 4h 39m 48.0s |
| Declination (J2000) | −76° 50′ 12″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.31. Visible from the whole Southern Hemisphere and north to latitude 13° N. South of latitude 13° S it never sets.
Through a telescope from Earth
Light's journey
The light you see tonight set out 201 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 3,570.4 billion years.