Planetary nebula
NGC 6894
Planetary nebula
A shell of gas thrown off by a dying Sun-like star, glowing in the ultraviolet light of the hot core at its centre. Within a few tens of thousands of years it will disperse and fade from view.
| Type | Planetary nebula |
|---|---|
| Constellation | Cygnus |
| Distance | 1,090 pc (3.6 thousand ly) |
| Diameter | 0.7 ly |
| Expansion speed | 43 km/s |
| PN G name | PN G069.4-02.6 |
| Source | Strasbourg–ESO PN Catalogue |
| Right ascension (J2000) | 20h 16m 23.9s |
| Declination (J2000) | +30° 33′ 54″ |
In the sky
Visible from the whole Northern Hemisphere and south to latitude 59° S. North of latitude 59° N it never sets. It stands highest at midnight in July, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out around 1530 BC. At the speed of Voyager 1, the fastest craft leaving the Solar System (16.9 km per second), the trip would take 63 million years.