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GeoAstro
Applets

Astronomy
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Chaos Game
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Miscel-

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Physics Quiz
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Who is
Who ?

Juergen Giesen's
GeoAstro Applet Collection

Sun, Moon
                      and Earth

Run my Java Applets for detailed solar and lunar data and observe the daily and annual path of the sun and moon for any location.

Featured by "Science" Magazine
Article in "Sky & Telescope" (June 2001)
Griffith Observatory Star Award

 

How to get...


GeoAstro Applet Collection

more than 65 applets listed below
including the online documents.

Moon Applets

14 applets: Sun,Moon&Earth, Sun&Moon Horizon, MoonPhase, MoonYear, MoonData, Elevation & Azimuth, Moon, Moon Motion; SunMoon Map, Moon Distance, Moon Libration, Moonlight, Elevation & Azimuth of the Sun, Elevation & Azimuth of the Sun & Moon
Previews


Sundial Applets

18 Sundials:
Analemma Sundial, Horizontal Sundial, Pie Sundial, Cylinder Sundial, Sundial Box, Spider Sundial, Spider: Vertical and Polar Pointing Gnomon, North Finder, Bifilar Sundial, Cone Sundial, Babylonian, Italian, Unequal Hours Sundial, Pingre Sundial, Daylight Hours Sundial, Sidereal Time Sundial, Foster-Lambert Sundial,
Azimuthal Orthographic, Gnomon, Horizontal and Vertical Sundial.
10 Additional Applets:
Sun Data, Sunrise & Sunset (2), Declination & Equation of Time (2), Current
Declination & Equation of Time, Azimuth & Elevation, SunClock, Twilight Clock, Sun Tables.
Previews


Ancient Sundials
8 Applets:
Quadrans Vetus, Quadratum Horarium Generale (Regiomontanus), Capuchin Dial,  Apian Card Dial (2), Gunter's Quadrant,
Quadrant, Planet Clock (Planetary Hours).
Previews
AstroClock Applets
7 Applets:
Sun Clock, Twilight Clock, Sidereal and Solar Time, Local Sidereal Rime, Mean Local Time, True Local Time, Solar and Lunar Time.
Previews

More Astro Applets
7 Applets: Mercury and Venus Transit - Venus Transit Observer - Phases of Mercury and Venus - Planetary Motion of Mercury, Venus and Mars - Geocentric Motion - Transit Motion - Mercury and Venus Chaser's Calculator (J. Walker)
Previews

GeoAstro Applet Collection:
Description:
Run applet:

Part 1

Sun, Moon, Planets, Stars

Planet Applet
Sky Map
Galilean Moons of Jupiter

Part 2

Sun and Moon

Graphics

Sun, Moon & Earth (Jars Top 25%)
New Sun & Earth (Jars Top 5%)
SunMoon Map
Sunshine (Jars Top 25%)
Daylight (Jars Top 25%)
Solstice Daylight
Day & Night
Sun Map (Day & Night Terminator)
Simultan. Rise and Set, Equal Altitude
Sun Shadow (Jars Top 25%)
Sun & Moon Polar
Sun position in polar coordinates
Sun & Moon Azimuth at Horizon
Sun & Earth
Sun View
Solar and Lunar Standstills
Sun Plotter (Jars Top 25%)
New Sun Plotter

Solar Eclipse

Solar Rotation Applet
Pursuing the Sun

Part 3

Sun

Data Applets

Sunrise & Sunset
Rise and Set Worldwide
Sun Data
Sunrise & Sunset Table
Night Hours
Declination and Equation of Time
Small Declination and E. of Time
Azimuth and Elevation Diagrams
Azimuth & Elevation
Sun Azimuth at Rise and Set
Seasons
Elevation & Azimuth of the Sun
Elevation & Azimuth of the Moon
Elevation & Azimuth of the Sun & Moon
Solar Rotation

Part 4

Moon

Moon Phases for a Year
Moon Phase
Moon Data
Elevation & Azimuth of the Moon
Moon
Longitude of the Moon
Moon Distance
Moon Libration
MoonLight

Part 5

AstroClocks

Sidereal and Solar Time Clock
Sidereal Time Clock
True Local Time Clock
Mean Local Time Clock
Twilight Clock
Sun Clock
Solar and Lunar Time Clock

Part 6

Sundials

Analemma Sundial
Horizontal Sundial
Pie Sundial
Cylinder Sundial
Sundial in a Box

Part 7

General Astronomy,
Miscellaneous

Seasons
Obliquity of the Ecliptic
Precession
Precession and Proper Motion
Sky Precession
Cosmology Applet
Stonehenge
Solving Kepler's Equation
Azimuth at Solstice
Eclipse Magnitude and Obscuration
Atmospheric Refraction
Lagrange Points
Geo
centric Planet Motion


More applets:

Pursuing the Sun. A mathematical astronomy problem


How to get the Applets

More Java applets (no astronomy, source code included)

JavaScript Astronomy: Sunrise, Sunset Table and more

Mathematical Astronomy Books


How to compute the position of the Sun

How to compute the length of a day

Last Modified: 2011, Dec 16

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