Galaxy · Elliptical
NGC 2398
NGC 2398 is a galaxy in the direction of the constellation Gemini, 415.2 million light-years away.
| Type | Elliptical |
|---|---|
| Constellation | Gemini |
| Distance | 415.2 million light-years (127.30 Mpc) |
| Diameter | 193,200 light-years · 2.2 × the Milky Way |
| Absolute magnitude | magnitude −22.29 |
| Apparent magnitude | magnitude 13.23 |
| Luminosity | 3.6 × the Milky Way |
| Right ascension (J2000) | 7h 30m 16.2s |
| Declination (J2000) | +24° 29′ 16″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.23. Visible from the whole Northern Hemisphere and south to latitude 66° S. North of latitude 66° N it never sets. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 415 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 7,365.3 billion years.