Star cluster
NGC 7129
Open star cluster · 14 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 | Cepheus |
| Distance | 1,046 pc (3.4 thousand ly) |
| Age | 14 million years |
| Member stars (MWSC) | 9 |
| Reddening E(B−V) | 1.41 |
| Source | MWSC (Kharchenko et al. 2013) |
| Right ascension (J2000) | 21h 42m 54.0s |
| Declination (J2000) | +66° 06′ 36″ |
In the sky
Visible from the whole Northern Hemisphere and south to latitude 24° S. North of latitude 24° N it never sets. It stands highest at midnight in August, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 1387 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 61 million years.