Star cluster
FSR 0042
Open star cluster · 2.8 billion 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 | Ophiuchus |
| Distance | 3,320 pc (10.8 thousand ly) |
| Age | 2.8 billion years |
| Member stars (MWSC) | 67 |
| Reddening E(B−V) | 0.60 |
| Source | MWSC (Kharchenko et al. 2013) |
| Right ascension (J2000) | 17h 14m 06.0s |
| Declination (J2000) | −10° 28′ 48″ |
In the sky
Visible from the whole Southern Hemisphere and north to latitude 80° N. South of latitude 80° 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 11 thousand years ago. At that time the first farming villages were being founded; there was no writing yet. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 192 million years.