Planetary nebula
H 3-29
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 | Taurus |
| Distance | 3,600 pc (11.7 thousand ly) · estimated |
| Diameter | 1.1 ly |
| Central star | V 18.6 |
| PN G name | PN G174.2-14.6 |
| Source | Strasbourg–ESO PN Catalogue |
| Right ascension (J2000) | 4h 37m 20.8s |
| Declination (J2000) | +25° 03′ 00″ |
In the sky
Visible from the whole Northern Hemisphere and south to latitude 65° S. North of latitude 65° N it never sets. It stands highest at midnight in November, the best time to observe it.
Through a telescope from Earth
Light's journey
The light you see tonight set out 12 thousand 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 208 million years.