Luna
E27944
Luna is the natural satellite of Earth, renowned for its phases, influence on tides, and prominence in human culture and mythology.
Observed surface forms (1)
| Surface form | Occurrences |
|---|---|
| Moon | 1 |
Statements (68)
| Predicate | Object |
|---|---|
| instanceOf |
Earth’s Moon
ⓘ
astronomical object ⓘ celestial body ⓘ natural satellite ⓘ |
| affects | length of Earth’s day over geological time ⓘ |
| age | about 4.5 billion years ⓘ |
| albedo | about 0.12 ⓘ |
| averageOrbitalPeriod | about 27.3 days ⓘ |
| belongsTo | Solar System ⓘ |
| causes |
lunar eclipses
ⓘ
most of the variation in Earth’s tides ⓘ solar eclipses ⓘ |
| diameter | about 3474 km ⓘ |
| distanceVariation | perigee and apogee due to elliptical orbit ⓘ |
| escapeVelocity | about 2.38 km/s ⓘ |
| farSideDominatedBy | highlands ⓘ |
| firstCrewedLandingMission | Apollo 11 ⓘ |
| firstHumanLandingDate | 1969-07-20 ⓘ |
| firstHumanOnSurface |
Neil A. Armstrong
ⓘ
surface form:
Neil Armstrong
|
| formedFrom | debris after a giant impact with early Earth (giant impact hypothesis) ⓘ |
| gravitationalInfluence | causes libration as seen from Earth ⓘ |
| has |
far side not visible from Earth
ⓘ
very thin exosphere ⓘ |
| hasBeenVisitedBy |
crewed spacecraft
ⓘ
uncrewed spacecraft ⓘ |
| hasCulturalSignificanceIn |
art
ⓘ
calendar systems ⓘ literature ⓘ mythology ⓘ religion ⓘ |
| hasNo | global magnetic field comparable to Earth’s ⓘ |
| hasPhase |
first quarter
ⓘ
full moon ⓘ last quarter ⓘ new moon ⓘ waning crescent ⓘ waning gibbous ⓘ waxing crescent ⓘ waxing gibbous ⓘ |
| hasResource | water ice in permanently shadowed regions ⓘ |
| influences | ocean tides on Earth ⓘ |
| mass | about 7.35×10^22 kg ⓘ |
| meanDistanceFromEarth | about 384400 km ⓘ |
| meanRadius | about 1737 km ⓘ |
| meanSurfaceTemperature | about 220 K ⓘ |
| name |
Luna
self-link
ⓘ
Moon ⓘ |
| nearSideDominatedBy | maria ⓘ |
| nodePrecessionPeriod | about 18.6 years ⓘ |
| orbits | Earth ⓘ |
| primaryBody | Earth ⓘ |
| relativeMassToEarth | about 1/81 of Earth’s mass ⓘ |
| relativeSizeToEarth | about one quarter of Earth’s diameter ⓘ |
| rotationPeriod | about 27.3 days ⓘ |
| rotationType | synchronous rotation ⓘ |
| secondHumanOnSurface | Buzz Aldrin ⓘ |
| stabilizes | Earth’s axial tilt ⓘ |
| surfaceComposition | silicate rocks ⓘ |
| surfaceFeature |
highlands
ⓘ
impact craters ⓘ maria ⓘ rilles ⓘ |
| surfaceGravity | about 1.62 m/s² ⓘ |
| synodicPeriod | about 29.5 days ⓘ |
| temperatureRange | about −173°C to +127°C ⓘ |
| tidalLock | tidally locked to Earth ⓘ |
| usedIn | lunar calendars ⓘ |
| visibleFrom | Earth with naked eye ⓘ |
Referenced by (8)
Full triples — surface form annotated when it differs from this entity's canonical label.