Comet
A bowling pin shaped comet photographed at close range by the Deep Space 1 probe in 2001.
| Type | Comet |
|---|---|
| Distance from the Sun | 3.61 AU |
| Diameter | 5 km |
| Mass | 2.00 × 10^13 kg |
| Temperature | -126°C |
| Orbital period | 2,502 days |
| Apparent magnitude | 12 |
| Redshift | 0 |
| Discovered | 1904 |
At 5 km across, Comet Borrelly is less than a thousandth of the diameter of Earth.
Its mass is less than a thousandth of the mass of Earth.
It keeps an average distance of 3.61 AU from the Sun, so sunlight takes 30 minutes to reach it.
A single orbit takes 6.9 years.
An average temperature of 147 K works out at -126 degrees Celsius, colder than the 15 degrees Earth averages.
It has been on record since 1904.
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