Galaxy · Barred spiral
NGC 6105
NGC 6105 is a galaxy in the direction of the constellation Corona Borealis, 403.2 million light-years away.
| Type | Barred spiral |
|---|---|
| Constellation | Corona Borealis |
| Distance | 403.2 million light-years (123.63 Mpc) |
| Diameter | 141,000 light-years · 1.6 × the Milky Way |
| Absolute magnitude | magnitude −21.65 |
| Apparent magnitude | magnitude 13.81 |
| Luminosity | 2 × the Milky Way |
| Right ascension (J2000) | 16h 17m 09.3s |
| Declination (J2000) | +34° 52′ 44″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.81. Visible from the whole Northern Hemisphere and south to latitude 55° S. North of latitude 55° N it never sets. It stands highest at midnight in May, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 403 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 7,153.0 billion years.