Galaxy · Irregular
HIPASS J1131-31
HIPASS J1131-31 is a galaxy in the direction of the constellation Hydra, 21.9 million light-years away.
| Type | Irregular |
|---|---|
| Constellation | Hydra |
| Distance | 21.9 million light-years (6.70 Mpc) |
| Diameter | 6,654 light-years · 0.076 × the Milky Way |
| Absolute magnitude | magnitude −13.00 |
| Apparent magnitude | magnitude 16.13 |
| Luminosity | 6.9 × 10⁻⁴ × the Milky Way |
| Right ascension (J2000) | 11h 31m 35.2s |
| Declination (J2000) | −31° 40′ 20″ |
| Source | Updated Nearby Galaxy Catalog (Karachentsev et al. 2013) |
In the sky
A telescope is needed to see it: its apparent magnitude is 16.13. Visible from the whole Southern Hemisphere and north to latitude 58° N. South of latitude 58° S 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 22 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 387.6 billion years.