Galaxy · Barred spiral
NGC 3811
NGC 3811 is a galaxy in the direction of the constellation Ursa Major, 144.7 million light-years away.
| Type | Barred spiral |
|---|---|
| Constellation | Ursa Major |
| Distance | 144.7 million light-years (44.36 Mpc) |
| Diameter | 75,000 light-years · 0.86 × the Milky Way |
| Absolute magnitude | magnitude −20.64 |
| Apparent magnitude | magnitude 12.59 |
| Luminosity | 0.79 × the Milky Way |
| Right ascension (J2000) | 11h 41m 16.6s |
| Declination (J2000) | +47° 41′ 27″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.59. Visible from the whole Northern Hemisphere and south to latitude 42° S. North of latitude 42° N it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 145 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 2,566.6 billion years.