Galaxy · Spiral
NGC 5403
NGC 5403 is a galaxy in the direction of the constellation Canes Venatici, 128.0 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Canes Venatici |
| Distance | 128.0 million light-years (39.23 Mpc) |
| Diameter | 142,800 light-years · 1.6 × the Milky Way |
| Absolute magnitude | magnitude −20.95 |
| Apparent magnitude | magnitude 12.02 |
| Luminosity | 1 × the Milky Way |
| Right ascension (J2000) | 13h 59m 50.8s |
| Declination (J2000) | +38° 10′ 57″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.02. Visible from the whole Northern Hemisphere and south to latitude 52° S. North of latitude 52° N it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 128 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 2,269.8 billion years.