Star cluster
Dolidze 13
Open star cluster · 912 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 | Cassiopeia |
| Distance | 2,400 pc (7.8 thousand ly) |
| Age | 912 million years |
| Member stars (MWSC) | 58 |
| Reddening E(B−V) | 0.35 |
| Source | MWSC (Kharchenko et al. 2013) |
| Right ascension (J2000) | 0h 50m 02.4s |
| Declination (J2000) | +64° 05′ 28″ |
In the sky
Visible from the whole Northern Hemisphere and south to latitude 26° S. North of latitude 26° N it never sets. It stands highest at midnight in October, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 7,828 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 139 million years.