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Mariner's astrolabeHistory of longitudeNautical almanacLongitudeIntercept methodSidereal timeAntikythera mechanismCelestial navigationKepler's laws of planetary motionSpherical astronomyPortolan chartAstronomical clockMeridian arcHistory of the compassMeridian altitudeSundialSextantAstrometryDeep space atomic clockTorquetumPoints of the compassSolar longitudeBackstaffHour angleInstrumental temperature recordGeographic coordinate systemEphemerisSolar timeIers reference meridianHistory of sundialsStereographic map projectionOrreryCompassGnss reflectometryDioptraAstronomical system of unitsLunar calendarIndusSatellite geodesyParallactic angleCopernican heliocentrismArgument of latitudeEpochTerrestrial timePolar alignmentLoran-cNewtonian telescopeDelisle scaleEquatorial coordinate systemMeridian circleLatitudeGyrocompassAstrariumInternational atomic timeAlfonsine tablesDobsonian telescopeFizeau experimentSecchi diskSynodic dayArmillary sphereSidereal yearMeridianPhase angleSurface exposure datingPrecise point positioningTimeline of cosmological theoriesJantar mantarLunar orbitCosmic distance ladderPulsar-based navigationLunar laser ranging experimentPlanisphereHistory of latitudeSun sensorHorizontal coordinate systemAnalemmaEcliptic coordinate systemStar trackerSatellite laser rangingLight-secondMercator 1569 world mapGlobal temperature recordCompass roseSolar system modelGeocentric modelDaymarkObservational cosmologyElongationDeclinationBarycentric julian dateOrbitPeriod-luminosity relationMariner 8NocturnalIslam and astrologyDigital sundialGeodetic reference system 1980Deep space explorationAstronomical nutationDoppler spectroscopy