Galaxy · Irregular
NGC 2903-HI-1
NGC 2903-HI-1 is a galaxy in the direction of the constellation Leo, 29.0 million light-years away.
| Type | Irregular |
|---|---|
| Constellation | Leo |
| Distance | 29.0 million light-years (8.90 Mpc) |
| Diameter | 2,348 light-years · 0.027 × the Milky Way |
| Absolute magnitude | magnitude −12.30 |
| Apparent magnitude | magnitude 17.45 |
| Luminosity | 3.6 × 10⁻⁴ × the Milky Way |
| Right ascension (J2000) | 9h 30m 39.9s |
| Declination (J2000) | +21° 43′ 25″ |
| Source | Updated Nearby Galaxy Catalog (Karachentsev et al. 2013) |
In the sky
A telescope is needed to see it: its apparent magnitude is 17.45. Visible from the whole Northern Hemisphere and south to latitude 68° S. North of latitude 68° N it never sets. It stands highest at midnight in February, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 29 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 514.9 billion years.