Galaxy · Lenticular
NGC 923
NGC 923 is a galaxy in the direction of the constellation Andromeda, 263.3 million light-years away.
| Type | Lenticular (estimated) |
|---|---|
| Constellation | Andromeda |
| Distance | 263.3 million light-years (80.74 Mpc) |
| Diameter | 78,500 light-years · 0.9 × the Milky Way |
| Absolute magnitude | magnitude −20.99 |
| Apparent magnitude | magnitude 13.55 |
| Luminosity | 1.1 × the Milky Way |
| Right ascension (J2000) | 2h 27m 34.6s |
| Declination (J2000) | +41° 58′ 39″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.55. Visible from the whole Northern Hemisphere and south to latitude 48° S. North of latitude 48° 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 263 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 4,671.5 billion years.