Galaxy · Elliptical
NGC 7317
NGC 7317 is a galaxy in the direction of the constellation Pegasus, 307.5 million light-years away.
| Type | Elliptical |
|---|---|
| Constellation | Pegasus |
| Distance | 307.5 million light-years (94.27 Mpc) |
| Diameter | 95,400 light-years · 1.1 × the Milky Way |
| Absolute magnitude | magnitude −21.10 |
| Apparent magnitude | magnitude 13.77 |
| Luminosity | 1.2 × the Milky Way |
| Right ascension (J2000) | 22h 35m 51.9s |
| Declination (J2000) | +33° 56′ 42″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.77. 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 307 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 5,454.3 billion years.