Galaxy · Spiral
DDO 82
DDO 82 is a galaxy in the direction of the constellation Ursa Major, 13.0 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Ursa Major |
| Distance | 13.0 million light-years (4.00 Mpc) |
| Diameter | 13,100 light-years · 0.15 × the Milky Way |
| Absolute magnitude | magnitude −15.30 |
| Apparent magnitude | magnitude 12.71 |
| Luminosity | 0.0058 × the Milky Way |
| Right ascension (J2000) | 10h 30m 35.0s |
| Declination (J2000) | +70° 37′ 10″ |
| Source | Updated Nearby Galaxy Catalog (Karachentsev et al. 2013) |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.71. Visible from the whole Northern Hemisphere and south to latitude 19° S. North of latitude 19° N it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 13 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 231.4 billion years.