Galaxy · Irregular
KKH 18
KKH 18 is a galaxy in the direction of the constellation Perseus, 14.4 million light-years away.
| Type | Irregular |
|---|---|
| Constellation | Perseus |
| Distance | 14.4 million light-years (4.43 Mpc) |
| Diameter | 3,523 light-years · 0.04 × the Milky Way |
| Absolute magnitude | magnitude −13.00 |
| Apparent magnitude | magnitude 15.23 |
| Luminosity | 6.9 × 10⁻⁴ × the Milky Way |
| Right ascension (J2000) | 3h 03m 05.9s |
| Declination (J2000) | +33° 41′ 40″ |
| Source | Updated Nearby Galaxy Catalog (Karachentsev et al. 2013) |
In the sky
A telescope is needed to see it: its apparent magnitude is 15.23. Visible from the whole Northern Hemisphere and south to latitude 56° S. North of latitude 56° N it never sets. It stands highest at midnight in November, 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 256.3 billion years.