Star cluster
DBSB 104
Open star cluster · 234 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 | Ara |
| Distance | 813 pc (2.7 thousand ly) |
| Age | 234 million years |
| Member stars (MWSC) | 65 |
| Reddening E(B−V) | 0.10 |
| Source | MWSC (Kharchenko et al. 2013) |
| Right ascension (J2000) | 17h 03m 59.4s |
| Declination (J2000) | −51° 05′ 24″ |
In the sky
Visible from the whole Southern Hemisphere and north to latitude 39° N. South of latitude 39° S it never sets. It stands highest at midnight in June, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 627 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 47 million years.