Time measurement: Solar Time

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Reference systems Goal: to describe the state vector of an object in space Coordinate system: cartesian/spherical Coordinate Name Celestial Fixed with or respect to inertial space Centre Earth (GCI Geocentric Inertial) or body Z-axis X-axis or Ref.Point Application Celestial Pole Vernal Equinox orbit analysis, astronomy Ecliptic inertial space Sun/Earth Ecliptic Pole Vernal Equinox solar system orbits, planet ephemeris Planet-fixed Planet Planet Planet Pole Greenwich or 0 meridian apparent satellite motion Perifocal Orbit Planet Angular momentum Eccentricity vector Orbit analysis Spacecraft fixed RPY, RθB, NTB Spacecraft s/c c.m. Dependent on the design Body (spacecraft or other) Spacecraft axis toward nadir Yaw in the nadir or R in the radial direction spacecraft axis in the direction of velocity perpendicular to nadir toward velocity position and orientation of instruments attitude manoeuvres, planet observation and encounter Main plane + reference axis to be defined Orbital Mechanics
Revolution: angular motion of the c.m around the Sun Reference systems: planets motion Rotation: angular motion of the planet around its own axis Revolution axis equator 23°27’ Rotation axis Revolution axis equator Earth Orbit plane Venus Orbit plane Rotation axis 177°
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 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 48 and 49: Time measurement: Astronomical cloc
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
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Time measurement: Solar Time

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