Comet
The rubber duck shaped comet orbited by the Rosetta spacecraft, which dropped the Philae lander onto its surface in 2014.
| Type | Comet |
|---|---|
| Distance from the Sun | 3.46 AU |
| Diameter | 3 km |
| Mass | 9.98 × 10^12 kg |
| Temperature | -123°C |
| Orbital period | 2,353 days |
| Apparent magnitude | 12 |
| Redshift | 0 |
| Discovered | 1969 |
At 3 km across, Comet 67P/Churyumov-Gerasimenko 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 3.463 AU from the Sun, so sunlight takes 29 minutes to reach it.
A single orbit takes 6.4 years.
An average temperature of 150 K works out at -123 degrees Celsius, colder than the 15 degrees Earth averages.
It has been on record since 1969.
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