Galaxy · Spiral
NGC 184
NGC 184 is a galaxy in the direction of the constellation Andromeda, 246.4 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Andromeda |
| Distance | 246.4 million light-years (75.56 Mpc) |
| Diameter | 64,200 light-years · 0.73 × the Milky Way |
| Absolute magnitude | magnitude −20.40 |
| Apparent magnitude | magnitude 13.99 |
| Luminosity | 0.63 × the Milky Way |
| Right ascension (J2000) | 0h 38m 35.8s |
| Declination (J2000) | +29° 26′ 51″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.99. 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 246 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 4,371.7 billion years.