Galaxy · Lenticular
NGC 7147
NGC 7147 is a galaxy in the direction of the constellation Pegasus, 429.4 million light-years away.
| Type | Lenticular |
|---|---|
| Constellation | Pegasus |
| Distance | 429.4 million light-years (131.66 Mpc) |
| Diameter | 154,700 light-years · 1.8 × the Milky Way |
| Absolute magnitude | magnitude −22.29 |
| Apparent magnitude | magnitude 13.31 |
| Luminosity | 3.6 × the Milky Way |
| Right ascension (J2000) | 21h 51m 58.4s |
| Declination (J2000) | +3° 04′ 18″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.31. Visible from the whole Northern Hemisphere and south to latitude 87° S. 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 429 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 7,617.6 billion years.