Comet
Halley's Comet
The most famous comet, returning about every 76 years; next due in 2061. Its dust gives us two meteor showers a year, the Eta Aquariids and the Orionids.
| Diameter | 11 km |
|---|---|
| Mean distance from the Sun | 17.800 AU (2,663 mln km) |
| Orbital period | 75.3 year |
| Naked-eye visible | No |