Galaxy · Spiral
UGC 7639
UGC 7639 is a galaxy in the direction of the constellation Canes Venatici, 23.3 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Canes Venatici |
| Distance | 23.3 million light-years (7.14 Mpc) |
| Diameter | 14,300 light-years · 0.16 × the Milky Way |
| Absolute magnitude | magnitude −15.80 |
| Apparent magnitude | magnitude 13.47 |
| Luminosity | 0.0091 × the Milky Way |
| Right ascension (J2000) | 12h 29m 53.0s |
| Declination (J2000) | +47° 31′ 48″ |
| Source | Updated Nearby Galaxy Catalog (Karachentsev et al. 2013) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.47. 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 23 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 413.1 billion years.