Time measurement: Solar Time

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Time measurement: Astronomical clocks The time interval definition and measurement are accomplished by taking into account the relative position of objects whose motion is known: For a terrestrial observer: Reference may be: the Sun (☼) the fixed stars North celestial pole Zenit ϕ = latitude Unit (day) = time span between 2 consecutive passages of the reference body on the observer meridian (celestial equatorial reference) N E Celestial sphere W S Σ t =time angle Time angle = celestial equator arc measured counterclockwise starting from the observer meridian (Σ point) up to the meridian passing through the observed object
Time measurement: Astronomical clocks Solar versus Sidereal time By changing the observed body the interval time changes not uniform definition of day
Page 1 and 2: Meccanica del volo spaziale
Page 3 and 4: Design Process Mission Requirements
Page 5 and 6: Mission phases: Earth Satellite Exa
Page 7 and 8: Mission phases: interplanetary tran
Page 10 and 11: Mission phases: interplanetary tran
Page 12 and 13: Programma del Corso Sistemi di rife
Page 14 and 15: Programma del Corso Manovre orbital
Page 16 and 17: Programma del corso Perturbazioni o
Page 18 and 19: Exam rules Modalità di valutazione
Page 20 and 21: Reference systems Goal: to describe
Page 22 and 23: Rotation motion effects • dayligh
Page 24 and 25: planets motion: relevant events Two
Page 26 and 27: planets motion: relevant events\poi
Page 28 and 29: Reference systems: Aries point Elio
Page 30 and 31: Reference systems: Spherical Eclipt
Page 32 and 33: Body Fixed Reference geocentric - [
Page 34 and 35: Reference systems: Spherical geocen
Page 36 and 37: Reference systems: Spherical Time d
Page 38 and 39: Time measurement: Solar Time Terres
Page 40 and 41: Reference systems: Rectangular- ECI
Page 42 and 43: Reference systems: Rect. ECEF-ITRF
Page 44 and 45: Perturbations Precession: Solar per
Page 46 and 47: Time measurement [..]The main purpo
Page 50 and 51: Time measurement: Solar Time Solar
Page 52 and 53: Time measurement Giorno solare: cor
Page 54 and 55: Time measurement:Solar Time Actual
Page 56 and 57: Time measurement: Solar Time Refere
Page 58 and 59: Time measurement: Solar Time Solar
Page 60 and 61: Analemmas Milano Bergamo
Page 62 and 63: Time measurement: Solar Time 24 sli
Page 64 and 65: Time measurement: Sideral Time Side
Page 66 and 67: Time measurement: Calendars • Cal
Page 68 and 69: Time measurement: Calendars Calenda
Page 70 and 71: Spherical reference systems transfo
Page 72 and 73: Reference systems transformation: R
Page 74 and 75: Reference systems transformation: S
Page 76: Southern Sky

Time measurement: Solar Time

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