Star cluster
Ruprecht 161
Open star cluster · 282 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 | Carina |
| Distance | 976 pc (3.2 thousand ly) |
| Age | 282 million years |
| Member stars (MWSC) | 149 |
| Reddening E(B−V) | 0.17 |
| Source | MWSC (Kharchenko et al. 2013) |
| Right ascension (J2000) | 10h 09m 10.8s |
| Declination (J2000) | −61° 15′ 36″ |
In the sky
Visible from the whole Southern Hemisphere and north to latitude 29° N. South of latitude 29° S 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 around 1158 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 56 million years.