NeoProgrammics
PHP Science Labs

• Basic Astronomy
  and
  Science-Related Tools
  
  by Jay Tanner

  ---

• ---

• TOP / REFRESH
  
• SELECT A RANDOM PROGRAM

  ---

• Index in Progress
• 
  
• INNER WORK
• 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
• Privacy Policy

• ---

• ---