Star cluster
NGC 2548
Open star cluster · 525 million years
An open cluster of stars born together from the same gas cloud in the Milky Way’s disc; the Galaxy’s tidal forces will disperse it within a few hundred million years. Position, distance, age and member count come from the MWSC catalogue; the total brightness is roughly estimated from the member count.
| Type | Star cluster |
|---|---|
| Constellation | Hydra |
| Distance | 789 pc (2.6 thousand ly) |
| Age | 525 million years |
| Member stars (MWSC) | 596 |
| Reddening E(B−V) | 0.04 |
| Metallicity [Fe/H] | 0.08 |
| Source | MWSC (Kharchenko et al. 2013) |
| Right ascension (J2000) | 8h 13m 44.4s |
| Declination (J2000) | −5° 46′ 12″ |
In the sky
Visible from the whole Southern Hemisphere and north to latitude 84° N. It stands highest at midnight in January, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 548 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 46 million years.