Galaxy · Elliptical
NGC 3940
NGC 3940 is a galaxy in the direction of the constellation Leo, 299.1 million light-years away.
| Type | Elliptical |
|---|---|
| Constellation | Leo |
| Distance | 299.1 million light-years (91.71 Mpc) |
| Diameter | 151,100 light-years · 1.7 × the Milky Way |
| Absolute magnitude | magnitude −21.87 |
| Apparent magnitude | magnitude 12.94 |
| Luminosity | 2.4 × the Milky Way |
| Right ascension (J2000) | 11h 52m 46.4s |
| Declination (J2000) | +20° 59′ 21″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.94. Visible from the whole Northern Hemisphere and south to latitude 69° S. North of latitude 69° N it never sets. It stands highest at midnight in March, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 299 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 5,306.2 billion years.