Galaxy · Lenticular
NGC 7707
NGC 7707 is a galaxy in the direction of the constellation Andromeda, 258.3 million light-years away.
| Type | Lenticular |
|---|---|
| Constellation | Andromeda |
| Distance | 258.3 million light-years (79.20 Mpc) |
| Diameter | 112,700 light-years · 1.3 × the Milky Way |
| Absolute magnitude | magnitude −21.66 |
| Apparent magnitude | magnitude 12.83 |
| Luminosity | 2 × the Milky Way |
| Right ascension (J2000) | 23h 34m 51.4s |
| Declination (J2000) | +44° 18′ 14″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.83. Visible from the whole Northern Hemisphere and south to latitude 46° S. North of latitude 46° 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 258 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 4,582.3 billion years.