Galaxy · Spiral
NGC 3794
NGC 3794 is a galaxy in the direction of the constellation Ursa Major, 64.4 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Ursa Major |
| Distance | 64.4 million light-years (19.74 Mpc) |
| Diameter | 38,600 light-years · 0.44 × the Milky Way |
| Absolute magnitude | magnitude −17.57 |
| Apparent magnitude | magnitude 13.91 |
| Luminosity | 0.047 × the Milky Way |
| Right ascension (J2000) | 11h 40m 54.3s |
| Declination (J2000) | +56° 12′ 08″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.91. Visible from the whole Northern Hemisphere and south to latitude 34° S. North of latitude 34° 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 64 million years ago. At that time the dinosaurs were gone and mammals were diversifying; there was no human lineage yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 1,142.1 billion years.