Planetary nebula
K 3-17
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. The distance is a statistical estimate, uncertain by 30–50 %.
| Type | Planetary nebula |
|---|---|
| Constellation | Aquila |
| Distance | 1,410 pc (4.6 thousand ly) · estimated |
| Diameter | 0.3 ly |
| PN G name | PN G039.8+02.1 |
| Source | Strasbourg–ESO PN Catalogue |
| Right ascension (J2000) | 18h 56m 18.2s |
| Declination (J2000) | +7° 07′ 23″ |
In the sky
Visible from the whole Northern Hemisphere and south to latitude 83° S. 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 4,599 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 82 million years.