NeoProgrammics
PHP Science Labs
Basic Astronomy
and
Science-Related Tools
by Jay Tanner
TOP / REFRESH
SELECT A RANDOM PROGRAM
Index in Progress
Directory
Solar System Events Synopsis
PHPSL PROGRAM DOWNLOADS
Basic Astronomical Statistics
SPHEROID/ELLIPSOID TOOLS
Ellipsoid Rectangular XYZ Calculator
Basic Spheroid Elements Calculator
Geodetic Distance Between Locations
PHP Ellipse Circumference Function
SPHERE TOOLS
Sphere Properties Calculator
Apparent Angular Diameter of Sphere
Visible Fraction of Sphere Surface
Distance To Horizon of Sphere
SUN TOOLS
Earth Aphelions Table - By Date
Earth Aphelions Table - By Distance
Equinoxes and Solstices Calculator
Earth Perihelion and Aphelion Calculator
Obliquity of the Ecliptic Calculator
J. Laskar Obliquity Paper
Stellar Magnitude of the Sun
MOON TOOLS
DE405 Lunar Ephemeris Calculator
Monthly Lunar Events Calculator
Yearly Lunar Events Calculator
Basic Lunar Eclipse Info
Current Moon/Sun Size Comparison
Lunar Phases Reference Table
Current Lunar Phase From 4 Sides
HD LUNAR PHASE EXPLORERS
POV-RAY LUNAR EXPLORER
Lunar Phase Image Sets
BASIC PLANETARY AND ASTEROID
EPHEMERIDES
DE405 Planetary Ephemerides
USNO AE98 Asteroid Ephemerides
STAR TOOLS
Distance Between Two Stars
Stellar Magnitude vs. Distance
Some Bright Star Distances/Times Table
THE VSOP87 THEORY
VSOP87 Rectangular XYZ-Equations
VSOP87 Spherical LBR-Equations
VSOP87 Series Terms Summaries
VSOP87 Coordinates Test Values
VSOP87 Source Code Generator Tool
VSOP87 Theory Source Paper
VSOP87 Theory Source Paper - PDF
NUTATIONS AND SERIES
Nutation in Longitude and RA
Nutation in Obliquity
Nutations IAU 1980 Series
and IAU 2000B Series
IAU Series 2000B Raw Data
IAU Series 2000B Nutation
In Longitude Algorithm
IAU Series 2000B Nutation
In Obliquity Algorithm
IAU Series 2000A Raw Data Table
CALENDAR TOOLS
NASA Earth Day/Night Map
Current World Times and Zones Table
USA Daylight Saving Time
EU Summer Time
Julian Day Number For Any Year
Julian Date and JD Number
Inverse Julian Date
Difference Between Dates/Times
1582 Julian/Gregorian Transition
1752 USA Julian/Gregorian Transition
SOME EXTRA PHP STUFF
Some PHP Utility Functions Code
and
Demo Programs
SPECIAL COMPUTATIONAL TOOLS
Quick Metric Length Equivalents
Wind Chill Calculator - NOAA
Temperature Scale Interconverter
Convert Degrees to: Deg° Min ' Sec"
Kepler's Third Law Calculator
Planetary Size Comparisons
Factorial Calculator
Combinations Calculator
Permutations Calculator
Permutations of Symbols
Simple Quadratic Equation Calculator
Standard Deviation Calculator
Linear Least Squares Regression Calculator
Lagrange Interpolation Tool
Base 10 Integer to Base B Conversion
Integer Base (radix) Inter-Converter
Non-Integer (radix) Inter-Conversions
Relativistic Motion Model 2
Reference Data
List Internal PHPSL Modules
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