Star cluster
Platais 12
Open star cluster · 251 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 | Centaurus |
| Distance | 491 pc (1.6 thousand ly) |
| Age | 251 million years |
| Member stars (MWSC) | 751 |
| Reddening E(B−V) | 0.14 |
| Metallicity [Fe/H] | 0.03 |
| Source | MWSC (Kharchenko et al. 2013) |
| Right ascension (J2000) | 13h 52m 35.4s |
| Declination (J2000) | −63° 24′ 18″ |
In the sky
Visible from the whole Southern Hemisphere and north to latitude 27° N. South of latitude 27° S it never sets. It stands highest at midnight in April, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around the year 425. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 28 million years.