Galaxy · Barred spiral
NGC 7738
NGC 7738 is a galaxy in the direction of the constellation Pisces, 315.1 million light-years away.
| Type | Barred spiral |
|---|---|
| Constellation | Pisces |
| Distance | 315.1 million light-years (96.60 Mpc) |
| Diameter | 184,500 light-years · 2.1 × the Milky Way |
| Absolute magnitude | magnitude −22.14 |
| Apparent magnitude | magnitude 12.78 |
| Luminosity | 3.1 × the Milky Way |
| Right ascension (J2000) | 23h 44m 02.0s |
| Declination (J2000) | +0° 31′ 00″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.78. Visible from the whole Northern Hemisphere and south to latitude 89° 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 315 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 5,589.1 billion years.