mirror of
https://github.com/cosinekitty/astronomy.git
synced 2026-01-22 22:40:50 -05:00
eeb1482d37
Not fully validated, but I did tweak Montenbruck/Pfleger formulas to match JPL Horizons output for 2018-04-27 02:00 UTC. Still need to implement formulas for Moon and Saturn.
252 lines
9.7 KiB
HTML
252 lines
9.7 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<title>Astronomy unit test</title>
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<script src="../source/js/astronomy.js"></script>
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<script>
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window.onload = function() {
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function FormatDec(x) {
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var neg = (x < 0);
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x = Math.abs(x);
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var deg = Math.floor(x);
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var dz = '';
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if (deg < 10) dz += '0';
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var min = 60 * (x % 1);
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var mz = '';
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if (min < 10) mz += '0';
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var prefix = neg ? '-' : '+';
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return `${prefix}${dz}${deg.toFixed(0)}:${mz}${min.toFixed(2)}`;
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}
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function FormatRa(x) {
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var neg = (x < 0);
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x = Math.abs(x);
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var deg = Math.floor(x);
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var dz = '';
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if (deg < 10) dz += '0';
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var min = 60 * (x % 1);
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var mz = '';
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if (min < 10) mz += '0';
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return `${dz}${deg.toFixed(0)}:${mz}${min.toFixed(2)}`;
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}
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var now = new Date();
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const observer = Astronomy.MakeObserver(29, -81, 10);
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var body, pos;
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document.getElementById('CurrentDateTime').innerText = now.toLocaleString();
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for (body of Astronomy.Bodies) {
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if (body === 'Moon')
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pos = Astronomy.GeoVector(body, now);
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else
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pos = Astronomy.HelioVector(body, now);
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var cell = document.getElementById('pos_' + body);
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cell.innerText = `(${pos.x.toFixed(6)}, ${pos.y.toFixed(6)}, ${pos.z.toFixed(6)})`;
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if (body !== 'Earth') {
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if (body !== 'Moon') // prevent redundant calculation
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pos = Astronomy.GeoVector(body, now);
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var sky = Astronomy.SkyPos(pos, observer);
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var raCell = document.getElementById('ra_' + body);
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raCell.innerText = FormatRa(sky.j2000.ra);
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var decCell = document.getElementById('dec_' + body);
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decCell.innerText = FormatDec(sky.j2000.dec);
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var hor = Astronomy.Horizon(sky.t, observer, sky.ofdate.ra, sky.ofdate.dec);
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var azCell = document.getElementById('az_' + body);
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azCell.innerText = hor.azimuth.toFixed(3);
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var altCell = document.getElementById('alt_' + body);
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altCell.innerText = hor.altitude.toFixed(3);
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var culm = Astronomy.SearchHourAngle(body, observer, 0, now);
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cell = document.getElementById('culm_' + body);
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cell.innerText = culm.time.date.toLocaleTimeString();
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const illum = Astronomy.Illumination(body, now);
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cell = document.getElementById('phase_' + body);
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cell.innerText = illum.phase.toFixed(3);
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cell = document.getElementById('dist_' + body);
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cell.innerText = illum.geo_dist.toFixed(6);
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cell = document.getElementById('mag_' + body);
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cell.innerText = (illum.mag > 0 ? '+' : '') + illum.mag.toFixed(2);
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}
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}
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const sun = Astronomy.SunPosition(now);
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document.getElementById('SunEcliptic_x').innerText = sun.ex.toFixed(6);
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document.getElementById('SunEcliptic_y').innerText = sun.ey.toFixed(6);
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document.getElementById('SunEcliptic_z').innerText = sun.ez.toFixed(6);
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document.getElementById('SunEcliptic_lat').innerText = sun.elat.toFixed(6);
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document.getElementById('SunEcliptic_lon').innerText = sun.elon.toFixed(6);
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}
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</script>
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</head>
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<body style="font-family: 'Courier New', Courier, monospace;">
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<div id='CurrentDateTime'></div>
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<table border="1" cellspacing="0" cellpadding="8">
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<tr>
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<td>body</td>
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<td>coords</td>
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<td>RA</td>
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<td>DEC</td>
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<td>azimuth</td>
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<td>altitude</td>
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<td>culm</td>
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<td>phase</td>
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<td>dist</td>
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<td>mag</td>
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</tr>
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<tr>
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<td>Sun</td>
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<td id='pos_Sun'></td>
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<td id='ra_Sun'></td>
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<td id='dec_Sun'></td>
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<td id='az_Sun'></td>
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<td id='alt_Sun'></td>
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<td id='culm_Sun'></td>
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<td id='phase_Sun'></td>
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<td id='dist_Sun'></td>
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<td id='mag_Sun'></td>
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</tr>
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<tr>
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<td>Moon</td>
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<td id='pos_Moon'></td>
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<td id='ra_Moon'></td>
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<td id='dec_Moon'></td>
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<td id='az_Moon'></td>
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<td id='alt_Moon'></td>
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<td id='culm_Moon'></td>
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<td id='phase_Moon'></td>
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<td id='dist_Moon'></td>
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<td id='mag_Moon'></td>
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</tr>
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<tr>
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<td>Mercury</td>
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<td id='pos_Mercury'></td>
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<td id='ra_Mercury'></td>
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<td id='dec_Mercury'></td>
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<td id='az_Mercury'></td>
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<td id='alt_Mercury'></td>
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<td id='culm_Mercury'></td>
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<td id='phase_Mercury'></td>
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<td id='dist_Mercury'></td>
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<td id='mag_Mercury'></td>
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</tr>
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<tr>
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<td>Venus</td>
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<td id='pos_Venus'></td>
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<td id='ra_Venus'></td>
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<td id='dec_Venus'></td>
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<td id='az_Venus'></td>
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<td id='alt_Venus'></td>
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<td id='culm_Venus'></td>
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<td id='phase_Venus'></td>
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<td id='dist_Venus'></td>
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<td id='mag_Venus'></td>
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</tr>
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<tr>
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<td>Earth</td>
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<td id='pos_Earth'></td>
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</tr>
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<tr>
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<td>Mars</td>
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<td id='pos_Mars'></td>
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<td id='ra_Mars'></td>
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<td id='dec_Mars'></td>
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<td id='az_Mars'></td>
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<td id='alt_Mars'></td>
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<td id='culm_Mars'></td>
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<td id='phase_Mars'></td>
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<td id='dist_Mars'></td>
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<td id='mag_Mars'></td>
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</tr>
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<tr>
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<td>Jupiter</td>
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<td id='pos_Jupiter'></td>
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<td id='ra_Jupiter'></td>
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<td id='dec_Jupiter'></td>
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<td id='az_Jupiter'></td>
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<td id='alt_Jupiter'></td>
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<td id='culm_Jupiter'></td>
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<td id='phase_Jupiter'></td>
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<td id='dist_Jupiter'></td>
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<td id='mag_Jupiter'></td>
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</tr>
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<tr>
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<td>Saturn</td>
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<td id='pos_Saturn'></td>
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<td id='ra_Saturn'></td>
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<td id='dec_Saturn'></td>
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<td id='az_Saturn'></td>
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<td id='alt_Saturn'></td>
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<td id='culm_Saturn'></td>
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<td id='phase_Saturn'></td>
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<td id='dist_Saturn'></td>
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<td id='mag_Saturn'></td>
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</tr>
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<tr>
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<td>Uranus</td>
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<td id='pos_Uranus'></td>
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<td id='ra_Uranus'></td>
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<td id='dec_Uranus'></td>
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<td id='az_Uranus'></td>
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<td id='alt_Uranus'></td>
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<td id='culm_Uranus'></td>
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<td id='phase_Uranus'></td>
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<td id='dist_Uranus'></td>
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<td id='mag_Uranus'></td>
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</tr>
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<tr>
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<td>Neptune</td>
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<td id='pos_Neptune'></td>
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<td id='ra_Neptune'></td>
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<td id='dec_Neptune'></td>
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<td id='az_Neptune'></td>
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<td id='alt_Neptune'></td>
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<td id='culm_Neptune'></td>
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<td id='phase_Neptune'></td>
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<td id='dist_Neptune'></td>
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<td id='mag_Neptune'></td>
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</tr>
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<tr>
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<td>Pluto</td>
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<td id='pos_Pluto'></td>
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<td id='ra_Pluto'></td>
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<td id='dec_Pluto'></td>
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<td id='az_Pluto'></td>
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<td id='alt_Pluto'></td>
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<td id='culm_Pluto'></td>
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<td id='phase_Pluto'></td>
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<td id='dist_Pluto'></td>
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<td id='mag_Pluto'></td>
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</tr>
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</table>
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<br>
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<br>
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<div>Sun Ecliptic Coordinates</div>
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<table border="1" cellspacing="0" cellpadding="8">
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<tr>
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<td>x</td>
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<td id="SunEcliptic_x"></td>
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</tr>
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<tr>
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<td>y</td>
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<td id="SunEcliptic_y"></td>
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</tr>
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<tr>
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<td>z</td>
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<td id="SunEcliptic_z"></td>
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</tr>
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<tr>
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<td>lat</td>
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<td id="SunEcliptic_lat"></td>
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</tr>
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<tr>
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<td>lon</td>
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<td id="SunEcliptic_lon"></td>
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</tr>
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</table>
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</body>
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</html>
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