Mercury
E18768
Mercury is the smallest and innermost planet in our Solar System, known for its extreme temperature variations and heavily cratered surface.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Mercury canonical | 52 |
| Mercury (planet) | 2 |
| Mercury orbit | 1 |
| mercury | 1 |
| mercury (Hg) | 1 |
Statements (65)
| Predicate | Object |
|---|---|
| instanceOf |
astronomical object
ⓘ
inner planet ⓘ planet ⓘ terrestrial planet ⓘ |
| albedoBond | about 0.12 ⓘ |
| atmosphereType | exosphere ⓘ |
| atmosphericComponent |
helium
ⓘ
hydrogen ⓘ oxygen ⓘ potassium ⓘ sodium ⓘ |
| axialTilt | about 0.03 degrees ⓘ |
| belongsToCategory |
innermost planet in the Solar System
ⓘ
smallest planet in the Solar System ⓘ |
| canTransitSunFromEarth | yes ⓘ |
| colorAppearance | dark gray ⓘ |
| coreComposition | large metallic core ⓘ |
| coreState | partly molten core ⓘ |
| crustComposition | silicate rock ⓘ |
| density_mean | about 5.43 grams per cubic centimeter ⓘ |
| diameter_mean | about 4,880 kilometers ⓘ |
| discoveredBy | prehistoric astronomers ⓘ |
| distanceFromSun_mean |
about 0.39 astronomical units
ⓘ
about 57.9 million kilometers ⓘ |
| escapeVelocity | about 4.25 kilometers per second ⓘ |
| exploredBy |
BepiColombo mission
ⓘ
surface form:
BepiColombo
MESSENGER ⓘ Mariner 10 ⓘ |
| firstFlybyBy | Mariner 10 ⓘ |
| firstFlybyYear | 1974 ⓘ |
| firstOrbiter | MESSENGER ⓘ |
| firstOrbiterArrivalYear | 2011 ⓘ |
| hasAtmosphere | yes ⓘ |
| hasMagneticField | yes ⓘ |
| hasNaturalSatellite | no known moons ⓘ |
| hasWaterIce | yes ⓘ |
| magneticFieldStrength_surface | about 1% of Earth’s ⓘ |
| magneticFieldType | global dipolar magnetic field ⓘ |
| mass | about 3.30 × 10^23 kilograms ⓘ |
| maxSurfaceTemperature | about 430 degrees Celsius ⓘ |
| meanSurfaceTemperature | about 167 degrees Celsius ⓘ |
| memberOf | inner Solar System ⓘ |
| minSurfaceTemperature | about −180 degrees Celsius ⓘ |
| namedAfter |
Hermes
ⓘ
surface form:
Mercury (Roman god)
|
| observedFrom | Earth ⓘ |
| orbitalEccentricity | about 0.2056 ⓘ |
| orbitalInclinationToEcliptic | about 7 degrees ⓘ |
| orbitalPeriod | about 88 Earth days ⓘ |
| partOf | Solar System ⓘ |
| positionFromSun | first planet from the Sun ⓘ |
| radius_mean | about 2,440 kilometers ⓘ |
| rotationOrbitResonance | 3:2 spin–orbit resonance ⓘ |
| siderealRotationPeriod | about 58.6 Earth days ⓘ |
| solarDayLength | about 176 Earth days ⓘ |
| surfaceArea | about 7.5 × 10^7 square kilometers ⓘ |
| surfaceFeature |
Caloris Basin
ⓘ
Rupes (scarps) ⓘ heavily cratered highlands ⓘ intercrater plains ⓘ smooth plains ⓘ |
| surfaceGravity | about 3.7 meters per second squared ⓘ |
| transitFrequencyApprox | about 13 times per century ⓘ |
| visibleTo | naked eye ⓘ |
| volume | about 6.1 × 10^10 cubic kilometers ⓘ |
| waterIceLocation | permanently shadowed polar craters ⓘ |
Referenced by (57)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
BepiColombo
subject surface form:
BepiColombo
subject surface form:
BepiColombo
this entity surface form:
Mercury orbit
this entity surface form:
mercury (Hg)
subject surface form:
Rupes (scarps) on Mercury
this entity surface form:
mercury
subject surface form:
Merkur
this entity surface form:
Mercury (planet)