Template:Planet Infobox/Mercury
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| Orbital characteristics (Epoch J2000) | ||||||||||
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| Avg. distance from Sun | 57,909,176 km 0.387 098 93 AU |
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| Orbital circumference | 360,000,000 km (2.406 AU) |
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| Eccentricity | 0.205 630 69 | |||||||||
| Perihelion | 46,001,272 km 0.307 499 51 AU |
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| Aphelion | 69,817,079 km 0.466 698 35 AU |
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| Orbital period | 87.969 34 d (0.240 846 9 a) |
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| Synodic period | 115.8776 d | |||||||||
| Avg. Orbital Speed | 47.36 km/s | |||||||||
| Max. Orbital Speed | 58.98 km/s | |||||||||
| Min. Orbital Speed | 38.86 km/s | |||||||||
| Inclination | 7.004 87° (3.38° to Sun's equator) |
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| Longitude of the ascending node |
48.331 67° | |||||||||
| Argument of the perihelion |
29.124 78° | |||||||||
| Number of satellites | 0 | |||||||||
| Physical characteristics | ||||||||||
| Equatorial diameter | 4879.4 km (0.383 Earths) |
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| Surface area | 7.5×107 km² (0.147 Earths) |
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| Volume | 6.083×1010 km³ (0.056 Earths) |
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| Mass | 3.302×1023 kg (0.055 Earths) |
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| Mean density | 5.427 g/cm³ | |||||||||
| Equatorial gravity | 3.701 m/s² (0.377 g) |
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| Escape velocity | 4.435 km/s | |||||||||
| Rotation period | 58.6462 d (58 d 15.5088 h) | |||||||||
| Rotation velocity | 10.892 km/h (at the equator) | |||||||||
| Axial tilt | ~0.01° | |||||||||
| Right ascension of North pole |
281.01° (18 h 44 min 2 s) 1 | |||||||||
| Declination | 61.45° | |||||||||
| Albedo | 0.10-0.12 | |||||||||
| Surface temp. (0°N,0°W) (85°N,0°W) |
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| Adjective | Mercurian | |||||||||
| Atmospheric characteristics | ||||||||||
| Atmospheric pressure | trace | |||||||||
| Potassium | 31.7% | |||||||||
| Sodium | 24.9% | |||||||||
| Atomic Oxygen | 9.5% | |||||||||
| Argon | 7.0% | |||||||||
| Helium | 5.9% | |||||||||
| Molecular Oxygen | 5.6% | |||||||||
| Nitrogen | 5.2% | |||||||||
| Carbon dioxide | 3.6% | |||||||||
| Water | 3.4% | |||||||||
| Hydrogen | 3.2% | |||||||||
