Planetary nebula
Hb 5
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 | Sagittarius |
| Distance | 2,000 pc (6.5 thousand ly) |
| Diameter | 0.5 ly |
| PN G name | PN G359.3-00.9 |
| Source | Strasbourg–ESO PN Catalogue |
| Right ascension (J2000) | 17h 47m 56.8s |
| Declination (J2000) | −29° 59′ 53″ |
In the sky
Visible from the whole Southern Hemisphere and north to latitude 60° N. South of latitude 60° 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 6,523 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 116 million years.