Amazing Space- Fast Facts: Comet Halley

Description	Halley is perhaps the most famous comet in history. This is the comet that proved correct Edmund Halley's prediction that it would reappear. It is responsible for depositing the debris that, when falling through Earth's atmosphere, causes the Orionid meteor showers.
Age	About the same age as the Sun: 4.5 billion years
Location	Outer solar system — Kuiper belt
Avg. distance from the Sun	It has a highly elongated orbit that takes it very close to the Sun and then flings it out into the outer solar system, well past the orbit of Pluto.
Diameter	The size of the nucleus has been estimated to be 15 km x 7 km x 7 km (or 9 mi x 4 mi x 4 mi).
Mass	1.7 x 10¹⁵ kilograms
Orbital period around the Sun	76 Earth years