Although the Mercurian year is very short, the days (and nights) drag on. Mercury spins on its axis quite slowly and only fits in one and a half days to its year. If you were to visit the planet you would have to suffer interminably long nights where the temperature drops to -280 degrees Farenheit. At dawn the temperature would quickly soar and as the huge sun edged its way across the sky the barren landscape would heat up to 800 degrees farenheit.
A visitor to the planet would also witness some of the most peculiar sunsets in the solar system.
Sometimes Mercury's rapid motion round the sun outpaces it's genteel rotation. If this happens at sunset, the sun will dip below the horizon then pop back up again for a couple of days before sinking back down again plunging you into the long cold night.
Equatorial radius (km) 2,439.7
Mean distance from the Sun (km) 57,910,000
Mean distance from the Sun (Earth = 1) 0.3871
Rotational period (days) 58.6462
Orbital period (days) 87.969
Mean surface temperature 179°C
Maximum surface temperature 427°C
Minimum surface temperature -173°C
Mercury is one of the hardest planets to see. Most of the time it is lost in the glare of the sun and only on a few occasions each year does it become visible.