Galaxy · Lenticular
NGC 665
NGC 665 is a galaxy in the direction of the constellation Pisces, 252.5 million light-years away.
| Type | Lenticular |
|---|---|
| Constellation | Pisces |
| Distance | 252.5 million light-years (77.43 Mpc) |
| Diameter | 164,400 light-years · 1.9 × the Milky Way |
| Absolute magnitude | magnitude −22.50 |
| Apparent magnitude | magnitude 11.94 |
| Luminosity | 4.4 × the Milky Way |
| Right ascension (J2000) | 1h 44m 56.1s |
| Declination (J2000) | +10° 25′ 23″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 11.94. Visible from the whole Northern Hemisphere and south to latitude 80° S. North of latitude 80° N it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 253 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 4,479.9 billion years.