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MARTINDALE'S
CALCULATORS ON-LINE CENTER ASTROPHYSICS, ASTRONOMY & SPACE SCIENCE ASTRO-PHYSICAL UNITS, JULIAN DATE ASTRONOMICAL DATA, SUNSET/SUNRISE, MOON PHASES SPACE WEATHER |
ASTRO-PHYSICAL CALCULATORS & APPLETS
Astro-Physical Calculator includes:
Physical Constants
Electron charge; Mass of electron; Mass of proton; Mass of neutron; Mass of hydrogen; Avagadro's number; Boltzmann constant; Rydberg constant; etc..."
ASTRONOMICAL DISTANCE CALCULATORS & APPLETS
Astronomical Distances Calculator: "...You are in a spaceship leaving Earth to explore the Universe! How fast do you want to travel?..." For more information see Astronomy Workshop Tools; Astronomy Workshop or the Department of Astronomy COSMIC DISTANCE SCALES - INTERACTIVE - M. Masetti & K. Mukai, High Energy Astrophysics Science Archive Research Center (HEASARC), Exploration of the Universe Division (EUD), Goddard Space Flight Center, NASA VERY EXTENSIVE. For more information see Education; High Energy Astrophysics Science Archive Research Center (HEASARC); Exploration of the Universe Division (EUD) or the Goddard Space Flight Center SOLAR SYSTEM DISTANCE CONVERTER - CALCULATOR - Near Earth Asteroid Rendezvous, Johns Hopkins' Applied Physics Laboratory, Johns Hopkins University Solar System Distance Calculator "...Converts between km, miles, Astronomical Units, and light travel time..." For more information see Site Index or Near Earth Asteroid Rendezvous CALCULATE THE VELOCITY OF THE LOCAL STANDARD OF REST
"...This routine will calculate the radial velocity of the observer with respect to a given RA and DEC on the date of observation for a number of popular standards of rest..." For more information see FUSE Planning Tools or FUSE - The Far Spectroscopic Explorer |
xTime - A Date/Time Calculator: input one of the following:
ASTRONOMICAL TIME CALCULATOR - L. Bogan, Department of Physics, Arcadia University, Nova Scotia, Canada VERY EXTENSIVE. Astronomical Time Calculator includes:
CONVERSION OF JULIAN DATE TO CALENDAR DATE AND VICE VERSA (JAVA APPLET) - Dieter Egger, Alpha-World, Forschungseinrichtung Satellitengeodäsie, Bundesrepublik Deutschland (Germany) For more information see Astro Applets; Applets; Site Map or Dieter Egger's Home Page HELIOCENTRIC JULIAN DAY - Dan Bruton, Department of Physics and Astronomy, Stephen F. Austin State University The Heliocentric Julian Day Calculator recalculates
JULIAN DAY CALCULATOR - Bureau des Longitudes, France In French/Français & English. For more information see Ephemerides Server or the Bureau des Longitudes JULIAN DATE, SUN COORDINATES, MOON COORDINATES - CALCULATOR - E.M. Murphy, FUSE - The Far Spectroscopic Explorer, Department of Physics and Astronomy, Johns Hopkins University & NASA Julian Date Calculator
JULIAN DAY - Dan Bruton, Department of Physics and Astronomy, Stephen F. Austin State University For more information see Java or Dan Bruton's Home Page TIME CONVERSION TOOL (JULIAN DATE CALCULATOR) - Solar System Dynamics Group, JPL Time Conversion Tool - Julian Date Calculator is used
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Duration of Daylight Table: "...provides, for each calendar date, the total time that any portion of the Sun is above the horizon..." Duration of Darkness Table: "...provides, for each calendar date, the total time that the entire Sun is below the horizon..." Sun and Moon Data for One Day Sun and Moon Data for One Day: "...obtain the times of sunrise, sunset, moonrise, moonset, transits of the Sun and Moon, and the beginning and end of civil twilight, along with..." Lunar Eclipse Computer Lunar Eclipse Computer: "...The table of local circumstances gives the local time of each eclipse "event" that is visible from the location..." Sun, Moon & Earth Calculator
PHOTOPERIOD CALCULATORS & APPLETS
Photoperiod Calculator output values include
Sunrise Time; Sunset Time; End of Civil Twilight; End of Nautical Twilight; Maximum Height Angle; Declination of Sun; Sun Altitude & Azimuth; Solar power at Noon; SUN'S ANGLE CALCULATORS & APPLETS
Sun Angle Calculator "...calculates a number of solar angles based on location, date, and time. It is useful in building design..." For more information see Tools or Sustainable By Design SUN'S PATH CALCULATORS & APPLETS
Sun Path Calculator "...displays the path of sun in the sky. It can be used to graphically determine solar altitude and azimuth angles; it's also a general educational.." For more information see Tools or Sustainable By Design |
Sunrise Calculator - Sunset Calculator includes:
SUNRISE/SUNSET CALCULATOR - C. Cornwall, A. Horiuchi & C. Lehman, Surface Radiation Research Branch (SRRB), Air Resources Laboratory, NOAA VERY EXTENSIVE. Sunrise Calculator - Sunset Calculator includes:
SUNRISE/SUNSET CALCULATOR FOR AM STATIONS IN THE U.S. - D. Bickel, Audio Services Division, Mass Media Bureau, Federal Communications Commission (FCC) VERY EXTENSIVE. Sunrise Calculator - Sunset Calculator for AM Stations in the U.S.:
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Space Weather Now includes:
GOES X-ray Flux 5-min data; GOES Magnetometer; GOES Proton Flux; GOES ElectronFlux; Estimated Planetary Kp; D-region Absorption Prediction Model; ACE RTSW MAG, EPAM, SWEPAM, SIS; Auroral Activity from NOAA POES; etc..." TODAY'S SPACE WEATHER DATA - Space Weather Prediction Center, National Oceanic and Atmospheric Administration (NOAA) VERY VERY VERY...EXTENSIVE. Space Weather Data and Products includes:
Space Weather Models; Solar and Geomagnetic Indices; Instrument Measurements (Boulder-NOAA Magnetometer and K-indices; GOES Magnetometer; GOES X-ray Flux 1-min data; GOES X-ray Flux 5-min data; GOES Proton Flux; GOES Electron Flux; Satellite Environment Plot; etc.); ACE RT Solar Wind; GOES Satellite Data; POES Auroral Activity; etc..." TODAY'S SPACE WEATHER - IPS Radio & Space Services, Department of Industry, Tourism and Resources, Australian Government, Australia Multimedia Databases (Text & Images). VERY VERY VERY...EXTENSIVE. IPS Radio & Space Services Space Weather includes
Latest Culgoora Spectrograph; Latest Culgoora H-Alpha Image; Geomagnetic Warning; K-Index; pc3 Index; GEOSTAT Alert; Geomagnetic Alert; Aurora Alert; Polar Cap Absorption; etc..." ACE - REAL TIME - DATA - ACE, ACE Science Center, JPL, NASA VERY VERY VERY...EXTENSIVE. ACE Browse Data "...is designed for monitoring large scale particle and field behavior and for selecting interesting time periods..." For more information see ACE Science Center, JPL
Current Space Weather includes: "...most recent Kp Index, Solar Wind Observations, NOAA/SEC Forcast, etc..." For more information see Space Weather Dials Interpretation Guide or the Rice Space Institute CURRENT SOLAR WIND CONDITIONS (DIALS ONLY) - Rice Space Institute, Department of Space Physics & Astronomy, Rice University VERY VERY EXTENSIVE. Current Solar Wind Conditions includes:
Azimuth; Convection; Alfven Speed; Sound Speed; Thermal Energy; Log[Beta]; Alfven Mach; Mach Number; etc..." |
AURORAL ACTIVITY - Space Weather Prediction Center, National Oceanic and Atmospheric Administration (NOAA) Multimedia Aurora Activity Databases (Text, Images & Videos/Movies). VERY VERY EXTENSIVE. Auroral Activity
Cosmic Rays
Neutron Monitors include: "...Apatity Neutron Monitor & the Barentsburg Neutron Monitor..." For more information see the Polar Geophysical Institute OULU NEUTRON MONITOR IN REAL-TIME - Cosmic Ray Station, Sodankyla Geophysical Observatory, University of Oulu, Finland VERY VERY EXTENSIVE. For more information see the Sodankyla Geophysical Observatory REAL-TIME COSMIC RAY VARIATIONS: MOSCOW NEUTRON MONITOR IN REAL-TIME - Moscow Neutron Monitor, Solar-Terrestrial Physics Division of IZMIRAN, Russia VERY VERY EXTENSIVE. For more information see Solar-Terrestrial Physics Division of IZMIRAN Earth Orientation
International Earth Rotation and Reference Systems Rapid Service/Prediction Center Service for Earth Orientation Parameters:
an angle describing the rotational motion of the Earth, and two angles which characterize the direction of the Earth's rotation axis in space..." EARTH ORIENTATION - Earth Orientation Center, International Earth Rotation Service (IERS) Multimedia Earth Orientation Databases, Bulletins, Teaching Modules (Text & Images). VERY VERY VERY...EXTENSIVE. Energetic Particles
LLNL Geosynchronous Energetic Particle Summary Plots "...provides access to all of our pre-generated "Low Energy" proton and electron summary plots..." For more information see LANL Geosynchronous Energetic Particle Data Gravitational Lensing - Microlensing Real-Time Data
THE OPTICAL GRAVITATIONAL LENSING EXPERIMENT - Optical Gravitational Lensing Experiment (OGLE), Warsaw University Astronomical Observatory, Warsaw, Poland VERY VERY VERY...EXTENSIVE. For more information see the Warsaw University Astronomical Observatory MICROLENSING ALERTS - MOA (Microlensing Observations in Astrophysics), University of Canterbury, New Zealand Multimedia Database (Text & Images). VERY VERY VERY...EXTENSIVE. For more information see MOA (Microlensing Observations in Astrophysics), New Zealand or University of Canterbury |
Heliocentric Trajectories for Selected Spacecraft, Planets, and Comets:
COHOWEB - Space Physics Data Facility (SPDF), Goddard Space Flight Center, NASA VERY VERY VERY...EXTENSIVE. "...Deep space hourly merged magnetic field, plasma, and ephemerides data..." For more information see Space Physics Data Facility (SPDF) or the Goddard Space Flight Center OMNIWEB - Space Physics Data Facility (SPDF), Goddard Space Flight Center, NASA Multimedia Databases (Text & Images). VERY VERY VERY...EXTENSIVE. "..."Near-Earth" solar wind magnetic field and plasma data, energetic proton fluxes (1-60 MeV), and geomagnetic and solar activity indice..." For more information see Space Physics Data Facility (SPDF) or the Goddard Space Flight Center Ionosphere
"...Global maps of ionospheric total electron content (TEC) are produced in real-time (RT) by mapping GPS observables collected from ground stations. These maps are produced to test real-time data acquisition..." For more information see Ionospheric and Atmospheric Remote Sensing REAL-TIME IONOSPHERIC DATA - SuperDARN, Applied Physics Laboratory, The Johns Hopkins University VERY VERY VERY...EXTENSIVE. "...Several of the northern hemisphere radars have been equipped with high speed data links that have allowed them to be connected to the internet and modifications to the Radar Operating System has been made so that radar data can be downloaded in real-time anywhere in the world...." For more information see SuperDARN Magnetopause & Bow Shock
REAL-TIME MAGENTOPAUSE AND BOW SHOCK MODEL - Polar Ionospheric X-ray Imaging Experiment (PIXIE) VERY VERY EXTENSIVE. "...Real time data from the ACE spacecraft (top two panels) are used to predict the shape and location of these boundaries at the present time and into the near future..." For more information see Polar Ionospheric X-ray Imaging Experiment (PIXIE) |
SPACE WEATHER NOW - Space Weather Prediction Center, National Oceanic and Atmospheric Administration (NOAA) VERY VERY VERY...EXTENSIVE. For more information see the Space Weather Prediction Center Data or the Space Weather Prediction Center CURRENT SPACE WEATHER: MAGNETIC ACTIVITY FORCASTS & REVIEWS - Canadian Space Weather Forecast Centre, Canada Multimedia Database (Text & Images). VERY VERY VERY...EXTENSIVE. For more information see Canadian Space Weather Forecast Centre CURRENT GEO-MAGNETIC STORM LEVEL - Space Physics Research Group, U.C. Berkeley Multimedia Current Geo-Magnetic Storm Level Database (Text & Images). VERY EXTENSIVE. For more information see Real Time Dst Estimate Web Pages or Space Physics Research Group CURRENT GEOMAGNETIC CONDITIONS - IPS Radio & Space Services, Department of Industry Science and Resources, Australian Government, Australia Multimedia Current Geomagnetic Conditions Database (Text & Images). VERY EXTENSIVE.. For more information see the IPS Radio & Space Services ELECTRON AND ION VELOCITY DISTRIBUTION IN THE EARTH'S POLAR MAGNETOSPHERE (HYDRA) - Department of Physics & Astronomy, University of Iowa Multimedia Hydra/DDEIS Spectrogram Survey Tool Database (Text & Images). VERY VERY EXTENSIVE. For more information see HYDRA Home Page ESTIMATED VALUE OF MAGNETIC DECLINATION - National Geophysical Data Center (NGDC), NOAA Multimedia Estimated Value of Magnetic Declination Database (Text & Images). VERY VERY EXTENSIVE. For more information see Geomagnetism or the National Geophysical Data Center (NGDC) GEOMAGNETISM REAL-TIME DATA - Geology Division, United States Geological Survey (USGS) Multimedia Geomagnetism Database (Text & Images). VERY VERY VERY...EXTENSIVE. Geomagnetism Real-Time Data
GEOMAGNETIC FIELD DATA PLOT - NICT Space Environment Information Service, Japan Multimedia Geomagnetic Field Data Plot Database (Text & Images). VERY VERY EXTENSIVE. For more information see NICT Space Environment Information Service MAGNETOGRAMS IN REAL TIME - International Real-time Magnetic Observatory Network Multimedia Real-Time Magnetograms Database (Text & Images). VERY VERY EXTENSIVE. "...The INTERMAGNET programme exists to establish a global network of cooperating digital magnetic observatories, adopting modern standard specifications for measuring and recording equipment,..." For more information see Intermagnet MAGNETOSPHERIC PLASMA ANALYZER (MPA) SPECTROGRAM - Los Alamos Magnetospheric Plasma Analyzer, Los Alamos National Laboratory (LANL) Multimedia Magnetospheric Plasma Analyzer Database in Real-Time (Text & Images). VERY VERY VERY...EXTENSIVE. For more information see MPA Data or The Los Alamos Magnetospheric Plasma Analyzer Home Page OMNIWEB - Space Physics Data Facility (SPDF), Goddard Space Flight Center, NASA Multimedia Databases (Text & Images). VERY VERY VERY...EXTENSIVE. "..."Near-Earth" solar wind magnetic field and plasma data, energetic proton fluxes (1-60 MeV), and geomagnetic and solar activity indice..." For more information see Space Physics Data Facility (SPDF) or the Goddard Space Flight Center |
Solar Wind
Solar Terrestrial Relations Observatory (STEREO) consists of
CURRENT SOLAR WIND DATA - The SoHO/CELIAS/MTOF/PM Sensors, Live from College Park Maryland Multimedia Solar Wind Database (Text & Images). VERY VERY EXTENSIVE. "...the latest 48 hours of solar wind data brought to you by the CELIAS/MTOF Proton Monitor on the SOHO Spacecraft..." For more information see The SoHO/CELIAS/MTOF/PM Sensors REAL TIME SOLAR WIND DATA - ACE, Space Environment Laboratory, National Oceanic and Atmospheric Administration (NOAA) Multimedia Solar Wind Database (Text & Images). VERY VERY VERY...EXTENSIVE. ACE Real Time Solar Wind Data includes:
Low Energy Electrons & Protons Data; Low Energy Electrons Data; Low Energy Protons Data; High Energy Protons..." REAL-TIME VOYAGER 2 SOLAR WIND SPEED PLOTS & SOLAR WIND DYNAMIC PRESSURE PLOTS - Voyager Plasma Science Experiment, Space Plasma Group, MIT Multimedia Voyager 2 Solar Wind Speed Plots & Solar Wind Dynamic Pressure Plots (Text & Images). VERY VERY VERY...EXTENSIVE. "...The Plasma Science Experiment on Voyager 2 measures that speed every 192 seconds, and that information is returned to Earth over the Deep Space Net, analyzed, and plotted here within a few days of receipt..." For more information see Voyager Plasma Science Experiment Home Page |
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Calculators On-Line Center: Physics & Astrophysics Calculators On-Line Center ~ Home Page |