Galaxy · Spiral
NGC 7357
NGC 7357 is a galaxy in the direction of the constellation Pegasus, 340.5 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Pegasus |
| Distance | 340.5 million light-years (104.41 Mpc) |
| Diameter | 89,500 light-years · 1 × the Milky Way |
| Absolute magnitude | magnitude −21.06 |
| Apparent magnitude | magnitude 14.03 |
| Luminosity | 1.2 × the Milky Way |
| Right ascension (J2000) | 22h 42m 23.9s |
| Declination (J2000) | +30° 10′ 16″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.03. Visible from the whole Northern Hemisphere and south to latitude 60° S. North of latitude 60° 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 341 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 6,040.9 billion years.