Galaxy · Elliptical
Sc22
Sc22 is a galaxy in the direction of the constellation Cetus, 13.7 million light-years away.
| Type | Elliptical |
|---|---|
| Constellation | Cetus |
| Distance | 13.7 million light-years (4.21 Mpc) |
| Diameter | 3,718 light-years · 0.043 × the Milky Way |
| Absolute magnitude | magnitude −11.10 |
| Apparent magnitude | magnitude 17.02 |
| Luminosity | 1.2 × 10⁻⁴ × the Milky Way |
| Right ascension (J2000) | 0h 23m 51.7s |
| Declination (J2000) | −24° 42′ 18″ |
| Source | Updated Nearby Galaxy Catalog (Karachentsev et al. 2013) |
In the sky
A telescope is needed to see it: its apparent magnitude is 17.02. Visible from the whole Southern Hemisphere and north to latitude 65° N. South of latitude 65° 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 14 million years ago. At that time the dinosaurs were gone and mammals were diversifying; there was no human lineage yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 243.6 billion years.