Galaxy · Spiral
NGC 7713A
NGC 7713A is a galaxy in the direction of the constellation Sculptor, 140.2 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Sculptor |
| Distance | 140.2 million light-years (42.97 Mpc) |
| Diameter | 64,400 light-years · 0.74 × the Milky Way |
| Absolute magnitude | magnitude −19.72 |
| Apparent magnitude | magnitude 13.45 |
| Luminosity | 0.34 × the Milky Way |
| Right ascension (J2000) | 23h 37m 08.3s |
| Declination (J2000) | −37° 42′ 51″ |
| Source | 2MASS Redshift Survey (Huchra et al. 2012) |
In the sky
A telescope is needed to see it: its apparent magnitude is 13.45. Visible from the whole Southern Hemisphere and north to latitude 52° N. South of latitude 52° S 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 140 million years ago. At that time dinosaurs ruled the Earth. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 2,486.2 billion years.