Galaxy · Spiral
DDO 129
DDO 129 is a galaxy in the direction of the constellation Canes Venatici, 29.0 million light-years away.
| Type | Spiral |
|---|---|
| Constellation | Canes Venatici |
| Distance | 29.0 million light-years (8.90 Mpc) |
| Diameter | 24,100 light-years · 0.28 × the Milky Way |
| Absolute magnitude | magnitude −16.80 |
| Apparent magnitude | magnitude 12.95 |
| Luminosity | 0.023 × the Milky Way |
| Right ascension (J2000) | 12h 28m 44.2s |
| Declination (J2000) | +43° 13′ 27″ |
| Source | Updated Nearby Galaxy Catalog (Karachentsev et al. 2013) |
In the sky
A telescope is needed to see it: its apparent magnitude is 12.95. Visible from the whole Northern Hemisphere and south to latitude 47° S. North of latitude 47° N 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 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.