Planet
相关诠释器 »太阳系中的行星.
[prop]
给出指定属性的值.
[{prop1,…}]
给出属性列表的值.
[prop,{qualivali,…}]
给出由限定符 quali->vali 修改的指定属性的值.
[Dated[prop,date]]
给出特定日期规范相对应的属性值.
EntityClass["Planet",{propispeci,…}]
表示实体类，其中 propi 的值由 speci 定义.
实体范例
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实体类范例
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属性
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AbsoluteMagnitudeH absolute magnitude H Age age Albedo albedo AlphanumericName alphanumeric name AlternateNames alternate names Altitude altitude AltitudeMaximum next maximum altitude AngularDiameterFromEarth angular diameter AngularRadiusFromEarth angular radius Aphelion largest distance from the Sun Apoapsis largest distance from Sun ApoapsisTime next apoapsis time ApoapsisTimeLast last apoapsis time ApparentAltitude apparent altitude ApparentMagnitude apparent magnitude AscendingNodeLongitude longitude of ascending node Ω AtmosphericComposition atmospheric composition AtmosphericPressure atmospheric pressure AtmosphericScaleHeight atmospheric scale height AuthalicDiameter authalic diameter AuthalicRadius authalic radius AverageDistanceFromEarth average distance from Earth AverageOrbitalCentripetalForce average orbital centripetal force AverageOrbitDistance average orbit distance AverageOrbitVelocity average orbit velocity AverageTemperature average temperature AverageVelocityAroundSun average heliocentric velocity Azimuth azimuth BondAlbedo bond albedo BooleanRise above the horizon Classes classes Color color Constellation constellation CylindricalEquidistantTexture cylindrical equidistant texture DailyTimeAboveHorizon daily time above horizon Declination declination Density mean density Diameter average diameter Discoverers discoverers DiscoveryDate discovery date DistanceFromEarth distance from Earth DistanceFromSun distance from Sun EccentricAnomaly eccentric anomaly Eccentricity orbital eccentricity EffectiveTemperature effective temperature EntityClasses entity classes EntityTypeList entity type list EquatorialAngularVelocity equatorial angular velocity EquatorialCircumference equatorial circumference EquatorialDiameter equatorial diameter EquatorialFrequency equatorial frequency EquatorialRadius equatorial radius EquatorialVelocity equatorial velocity EscapeVelocity escape velocity FarthestPlanet farthest planet GalacticLatitude galactic latitude GalacticLongitude galactic longitude GeocentricEclipticLatitude geocentric ecliptic latitude GeocentricEclipticLongitude geocentric ecliptic longitude Glyph astrological symbol GravitationalConstantMassProduct gravitational constant mass product Gravity gravity GreenwichHourAngle Greenwich hour angle HeliocentricEclipticLatitude heliocentric ecliptic latitude HeliocentricEclipticLongitude heliocentric ecliptic longitude HelioCoordinates heliocentric XYZ coordinates HelioVelocityVector heliocentric velocity vector HillRadius Hill radius Image image Inclination orbital inclination LocalHourAngle local hour angle MajorAxis orbital major axis Mass mass MaximalAltitudeTime next maximum altitude time MaximumOrbitalCentripetalForce maximum orbital centripetal force MaximumTemperature maximum temperature MeanAnomaly mean anomaly MeanMotion mean motion MinimumOrbitalCentripetalForce minimum orbital centripetal force MinimumTemperature minimum temperature MinorAxis orbital minor axis MomentOfInertia rotational moment of inertia MoonCount number of moons Moons moons NAIFIdentifier NAIF identifier Name name NearestPlanet nearest planet NorthPoleDeclination north pole declination NorthPoleRightAscension north pole right ascension ObjectType object type Oblateness oblateness Obliquity obliquity OppositionTimeLast last opposition time OppositionTimeNearest nearest opposition time OppositionTimeNext next opposition time OrbitalAngularMomentum orbital angular momentum OrbitalCentripetalForce orbital centripetal force OrbitalKineticEnergy orbital kinetic energy OrbitalMomentOfInertia orbital moment of inertia OrbitCenter orbit center OrbitCircumference orbit circumference OrbitPath orbit path OrbitPeriod orbital period OrbitRules orbit rules Periapsis smallest distance from Sun PeriapsisArgument argument of periapsis ω PeriapsisLongitude longitude of periapsis ϖ PeriapsisTime next periapsis time PeriapsisTimeLast last periapsis time Perihelion nearest distance from the Sun PolarCircumference polar circumference PolarDiameter polar diameter PolarRadius polar radius Radius average radius RetrogradeApparentMotionQuery apparent direction RightAscension right ascension RingSystemInnerDiameter ring system inner diameter RingSystemInnerRadius ring system inner radius RingSystemOuterDiameter ring system outer diameter RingSystemOuterRadius ring system outer radius RingSystemThickness ring system thickness RingSystemWidth ring system width RiseTime next rise RocheLimit Roche limit RotationalAngularMomentum rotational angular momentum RotationPeriod rotation period Satellites known satellites SemimajorAxis orbital semimajor axis SemiminorAxis orbital semiminor axis SetTime next set Shape shape SiderealHourAngle sidereal hour angle SolarConjunctionTimeLast last solar conjunction time SolarConjunctionTimeNearest nearest solar conjunction time SolarConjunctionTimeNext next solar conjunction time SolarDay solar day SolidAngleFromEarth solid angle SphereOfInfluenceRadius sphere of influence radius StationaryOrbitRadius stationary orbit radius StationaryOrbitSpeed stationary orbit speed SurfaceArea surface area TexturedSurface 3D graphic TransitTime next transit time TrueAnomaly true anomaly VelocityAroundSun instantaneous heliocentric velocity Volume volume VolumetricDiameter volumetric diameter VolumetricRadius volumetric radius ZenithAngle zenith angle
详细信息
- "Planet" 实体包括国际天文学联合会认可的所有八个行星.
- "Planet" 实体类除了环状行星外还包括内行星和外行星.
- 部分属性可用于作为整体的 "Planet" 实体类型，并可用 EntityValue["Planet",property] 格式给出，此类属性包括：
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"Properties" 可用属性列表 "PropertyCanonicalNames" 可用属性的标准名称 "SampleEntities" 可用实体的范例列表（通常长度为 10） "SampleEntityClasses" 可用实体类的范例列表（通常长度为 10） "EntityCount" 可用实体的数目 "Entities" 可用实体的列表 "EntityCanonicalNames" 可用实体的标准名称 "EntityClasses" 可用实体类的列表 "EntityClassCanonicalNames" 可用实体类的标准名称 "PropertyClasses" 可用属性分类的列表 "PropertyClassCanonicalNames" 可用属性分类的标准名称 "PropertyCount" 可用属性的数目 - 以下注释可用于 EntityValue["Planet",property,annotation] 的第三个参数中：
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"Source" 属性的来源信息 "Date" 实体-属性值相关联的日期（若存在） "EntityAssociation" 实体和实体-属性值的关联 "PropertyAssociation" 属性和实体-属性值的关联 "EntityPropertyAssociation" 此关联中，指定实体是键，值为属性和实体-属性值的嵌套关联 "PropertyEntityAssociation" 此关联中，指定属性是键，值为实体和实体-属性值的嵌套关联 "Dataset" 此数据集，指定实体是键和值为属性名称和实体-属性值的关联 - 以下注释可用于 EntityValue[property,annotation] 的第二个参数中：
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"Qualifiers" 可用于属性的限定词列表 "QualifierValues" 可用于每个限定词的可用值列表 "DefaultQualifierValues" 属性限定词的默认值列表 "Description" 属性的简短文字描述 "Definition" 属性的详细文字定义 "PhysicalQuantity" 实体-属性值相关联的物理量 "Unit" 实体-属性值相关联的单位 - Automatic 的限定词值表示一个可适用的值的格式; 例如，对于 "Date" 的限定词，包括正确的日期或日期跨度.
范例
打开所有单元关闭所有单元基本范例 (10)
查找实体：范围 (18)
限定词 (5)
指定观察者位置的位置限定符可以接受显式的 GeoPosition，基于位置的 Entity 对象或计算其中之一的查询：
日期 (4)
日期限定符可以接受显式 DateObject 或计算为 DateObject 的查询：
日期限定符也可用 Dated 指定：
与其他实体类型的关系 (3)
"Planet" 实体拥有 "PlanetaryMoon" 领域得自然卫星：
用 "Chemical" 实体指定大气成分：
"Planet" 实体可与 "SolarSystemFeature" 实体合并创建有特性标注的地图：
Planet Source Information