Galaxy · Irregular
UGC 5423
UGC 5423 is a galaxy in the direction of the constellation Ursa Major, 28.4 million light-years away.
| Type | Irregular |
|---|---|
| Constellation | Ursa Major |
| Distance | 28.4 million light-years (8.71 Mpc) |
| Diameter | 9,393 light-years · 0.11 × the Milky Way |
| Absolute magnitude | magnitude −16.20 |
| Apparent magnitude | magnitude 13.50 |
| Luminosity | 0.013 × the Milky Way |
| Right ascension (J2000) | 10h 05m 30.6s |
| Declination (J2000) | +70° 21′ 52″ |
| Source | Updated Nearby Galaxy Catalog (Karachentsev et al. 2013) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.50. Visible from the whole Northern Hemisphere and south to latitude 20° S. North of latitude 20° 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 28 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 503.9 billion years.