Galaxy · Barred spiral
NGC 7451
NGC 7451 is a galaxy in the direction of the constellation Pegasus, 311.4 million light-years away.
| Type | Barred spiral |
|---|---|
| Constellation | Pegasus |
| Distance | 311.4 million light-years (95.49 Mpc) |
| Diameter | 115,900 light-years · 1.3 × the Milky Way |
| Absolute magnitude | magnitude −21.10 |
| Apparent magnitude | magnitude 13.80 |
| Luminosity | 1.2 × the Milky Way |
| Right ascension (J2000) | 23h 00m 40.8s |
| Declination (J2000) | +8° 28′ 04″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.80. Visible from the whole Northern Hemisphere and south to latitude 82° S. It stands highest at midnight in September, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 311 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 5,524.9 billion years.