Galaxy · Spiral
NGC 6420
NGC 6420 is a galaxy in the direction of the constellation Draco, 378.5 million light-years away.
| Type | Spiral (estimated) |
|---|---|
| Constellation | Draco |
| Distance | 378.5 million light-years (116.06 Mpc) |
| Diameter | 150,200 light-years · 1.7 × the Milky Way |
| Absolute magnitude | magnitude −21.38 |
| Apparent magnitude | magnitude 13.94 |
| Luminosity | 1.6 × the Milky Way |
| Right ascension (J2000) | 17h 36m 16.3s |
| Declination (J2000) | +68° 03′ 08″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.94. Visible from the whole Northern Hemisphere and south to latitude 22° S. North of latitude 22° N it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 379 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 6,715.0 billion years.