Galaxy · Elliptical
NGC 7318A
NGC 7318A is a galaxy in the direction of the constellation Pegasus, 308.9 million light-years away.
| Type | Elliptical |
|---|---|
| Constellation | Pegasus |
| Distance | 308.9 million light-years (94.71 Mpc) |
| Diameter | 193,400 light-years · 2.2 × the Milky Way |
| Absolute magnitude | magnitude −22.44 |
| Apparent magnitude | magnitude 12.44 |
| Luminosity | 4.1 × the Milky Way |
| Right ascension (J2000) | 22h 35m 57.9s |
| Declination (J2000) | +33° 57′ 56″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.44. Visible from the whole Northern Hemisphere and south to latitude 56° S. North of latitude 56° N it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 309 million years ago. At that time complex animals were spreading through the seas and over the land; there were no dinosaurs yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 5,479.7 billion years.