:: MERCURY ::
Metric
Scientific Notation
By Comparison
(Length of Day)
(Length of Year)
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:: MERCURY :: |
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Metric
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Scientific Notation
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By Comparison
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| Discovered By | Known by the Ancients | ||
| Date of Discovery | Unknown | ||
| Average Distance from the Sun | 57,909,175 km | 5.7909175 x 107 km (0.38709893 A.U.) | Earth is 1 A.U. (Astronomical Unit) from the Sun |
| Perihelion (closest) | 46,000,000 km | 4.600 x 107 km (0.3075 A.U.) | 0.313 x Earth |
| Aphelion (farthest) | 69,820,000 km | 6.982 x 107 km (0.4667 A.U.) | 0.459 x Earth |
| Equatorial Radius | 2,439.7 km | 2.4397 x 103 km | 0.3825 x Earth |
| Equatorial Circumference | 15,329.1 km | 1.53291 x 104 km | - |
| Volume | 60,827,200,000 km3 | 6.08272 x 1010 km3 | 0.054 x Earth's |
| Mass | 330,220,000,000,000,000,000,000 kg | 3.3022 x 1023 kg | 0.055 x Earth's |
| Density | 5.427 g/cm3 | 0.984 x Earth | |
| Surface Area | 74,800,000 km2 | 7.48 x 107 km2 | 0.108 x Earth |
| Equatorial Surface Gravity | 3.7 m/s2 | If you weigh 100 pounds on Earth, you would weigh 38 pounds on Mercury | |
| Escape Velocity | 15,300 km/h | 4.25 x 103 m/s | Escape Velocity of Earth is 25,022 mph |
| Sidereal Rotation
Period (Length of Day) |
58.646 Earth days 1407.5 hours | 58.81 x Earth | |
| Sidereal Orbit Period
(Length of Year) |
0.241 Earth years 87.97 Earth days | 0.241 x Earth | |
| Mean Orbit Velocity | 172,341 km/h | 47,872.5 m/s | 47,872.5 m/s |
| Orbital Eccentricity | 0.20563069 | 12.3 x Earth | |
| Orbital Inclination to Ecliptic | 7 degree | ||
| Equatorial Inclination to Orbit | 0 degrees | Earth's equatorial inclination to orbit is 23.45 degrees | |
| Orbital Circumference | 356,000,000 km | 3.56 x 108 km | 0.385 x Earth |
| Minimum/Maximum Surface Temperature | -173/427 °C | 100/700 K | Earth's temperature range is ~ 185/331 K |
| Atmospheric Constituents | Earth's atmosphere consists mostly of N2, O2 | ||
