Galaxy · Lenticular
NGC 7315
NGC 7315 is a galaxy in the direction of the constellation Pegasus, 294.1 million light-years away.
| Type | Lenticular |
|---|---|
| Constellation | Pegasus |
| Distance | 294.1 million light-years (90.17 Mpc) |
| Diameter | 123,400 light-years · 1.4 × the Milky Way |
| Absolute magnitude | magnitude −21.98 |
| Apparent magnitude | magnitude 12.80 |
| Luminosity | 2.7 × the Milky Way |
| Right ascension (J2000) | 22h 35m 31.7s |
| Declination (J2000) | +34° 48′ 13″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.80. Visible from the whole Northern Hemisphere and south to latitude 55° S. North of latitude 55° 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 294 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 5,217.1 billion years.