Galaxy · Spiral
NGC 7753
NGC 7753 is a galaxy in the direction of the constellation Pegasus, 240.8 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Pegasus |
| Distance | 240.8 million light-years (73.83 Mpc) |
| Diameter | 213,400 light-years · 2.4 × the Milky Way |
| Absolute magnitude | magnitude −22.87 |
| Apparent magnitude | magnitude 11.47 |
| Luminosity | 6.1 × the Milky Way |
| Right ascension (J2000) | 23h 47m 04.8s |
| Declination (J2000) | +29° 29′ 00″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.47. Visible from the whole Northern Hemisphere and south to latitude 61° S. North of latitude 61° 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 241 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 4,271.7 billion years.