Galaxy · Spiral
NGC 7433
NGC 7433 is a galaxy in the direction of the constellation Pegasus, 353.6 million light-years away.
| Type | Spiral (estimated) |
|---|---|
| Constellation | Pegasus |
| Distance | 353.6 million light-years (108.40 Mpc) |
| Diameter | 106,700 light-years · 1.2 × the Milky Way |
| Absolute magnitude | magnitude −20.72 |
| Apparent magnitude | magnitude 14.46 |
| Luminosity | 0.85 × the Milky Way |
| Right ascension (J2000) | 22h 57m 51.7s |
| Declination (J2000) | +26° 09′ 44″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 14.46. Visible from the whole Northern Hemisphere and south to latitude 64° S. North of latitude 64° N it never sets. 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 354 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 6,271.8 billion years.