Galaxy · Spiral
UGC 7990
UGC 7990 is a galaxy in the direction of the constellation Coma Berenices, 66.5 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Coma Berenices |
| Distance | 66.5 million light-years (20.40 Mpc) |
| Diameter | 22,400 light-years · 0.26 × the Milky Way |
| Absolute magnitude | magnitude −16.00 |
| Apparent magnitude | magnitude 15.55 |
| Luminosity | 0.011 × the Milky Way |
| Right ascension (J2000) | 12h 50m 27.2s |
| Declination (J2000) | +28° 21′ 10″ |
| Source | Updated Nearby Galaxy Catalog (Karachentsev et al. 2013) |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.55. Visible from the whole Northern Hemisphere and south to latitude 62° S. North of latitude 62° N it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 67 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 1,180.3 billion years.