{"id":2247,"date":"2026-01-30T22:28:20","date_gmt":"2026-01-30T20:28:20","guid":{"rendered":"https:\/\/science-x.net\/?page_id=2247"},"modified":"2026-01-30T22:38:35","modified_gmt":"2026-01-30T20:38:35","slug":"asteroid-impact-energy-calculator","status":"publish","type":"page","link":"https:\/\/science-x.net\/?page_id=2247","title":{"rendered":"Asteroid Impact Energy Calculator"},"content":{"rendered":"\n<div class=\"eco-tool wp-block-group\" id=\"eco-tool-asteroid-9f4a7\">\n  <div class=\"eco-tool__header\">\n    <h2 class=\"eco-tool__title\">Asteroid Impact Energy Calculator<\/h2>\n    <p class=\"eco-tool__lead\">\n      Estimate the explosive energy of an asteroid impact based on its size and speed. Results are approximate and for educational purposes.\n    <\/p>\n  <\/div>\n\n  <form class=\"eco-tool__form\" id=\"eco-asteroid-form-9f4a7\" novalidate>\n    <div class=\"eco-tool__grid3\">\n      <!-- Diameter -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-ast-diameter-9f4a7\">\n          Asteroid diameter (meters)\n        <\/label>\n        <input\n          class=\"eco-tool__input\"\n          id=\"eco-ast-diameter-9f4a7\"\n          type=\"number\"\n          min=\"1\"\n          step=\"1\"\n          value=\"50\"\n          inputmode=\"numeric\"\n        \/>\n        <div class=\"eco-tool__hint\">\n          Example: Chelyabinsk \u2248 20 m\n        <\/div>\n      <\/div>\n\n      <!-- Speed -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-ast-speed-9f4a7\">\n          Impact speed (km\/s)\n        <\/label>\n        <input\n          class=\"eco-tool__input\"\n          id=\"eco-ast-speed-9f4a7\"\n          type=\"number\"\n          min=\"1\"\n          step=\"0.1\"\n          value=\"20\"\n          inputmode=\"decimal\"\n        \/>\n        <div class=\"eco-tool__hint\">\n          Typical range: 12\u201325 km\/s\n        <\/div>\n      <\/div>\n\n      <!-- Density -->\n      <div class=\"eco-tool__field\">\n        <label class=\"eco-tool__label\" for=\"eco-ast-type-9f4a7\">\n          Asteroid type\n        <\/label>\n        <select class=\"eco-tool__input\" id=\"eco-ast-type-9f4a7\">\n          <option value=\"3000\">Stony (\u2248 3,000 kg\/m\u00b3)<\/option>\n          <option value=\"5000\">Iron (\u2248 5,000 kg\/m\u00b3)<\/option>\n          <option value=\"1500\">Comet-like (\u2248 1,500 kg\/m\u00b3)<\/option>\n        <\/select>\n        <div class=\"eco-tool__hint\">\n          Density affects total energy.\n        <\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"eco-tool__actions\">\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn\" id=\"eco-ast-calc-9f4a7\">\n        Calculate\n      <\/button>\n      <button type=\"button\" class=\"wp-element-button eco-tool__btn eco-tool__btn--ghost\" id=\"eco-ast-reset-9f4a7\">\n        Reset\n      <\/button>\n      <div class=\"eco-tool__error\" id=\"eco-ast-error-9f4a7\" aria-live=\"polite\"><\/div>\n    <\/div>\n  <\/form>\n\n  <div class=\"eco-tool__result\" id=\"eco-ast-result-9f4a7\" hidden>\n    <h3 class=\"eco-tool__subtitle\">Estimated impact energy<\/h3>\n\n    <div class=\"eco-tool__cards\">\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Explosive energy<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"eco-ast-mt-9f4a7\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\">Megatons of TNT<\/div>\n      <\/div>\n\n      <div class=\"eco-tool__card\">\n        <div class=\"eco-tool__metric-label\">Equivalent to<\/div>\n        <div class=\"eco-tool__metric-value\" id=\"eco-ast-bombs-9f4a7\">\u2014<\/div>\n        <div class=\"eco-tool__metric-sub\">Hiroshima-size bombs<\/div>\n      <\/div>\n    <\/div>\n\n    <div class=\"eco-tool__card eco-tool__card--wide\">\n      <div class=\"eco-tool__metric-label\">Famous comparisons<\/div>\n      <ul class=\"eco-tool__list\">\n        <li><strong>Chelyabinsk (2013):<\/strong> ~0.4\u20130.5 megatons<\/li>\n        <li><strong>Tunguska (1908):<\/strong> ~10\u201315 megatons<\/li>\n        <li><strong>Dinosaur extinction:<\/strong> ~100,000,000 megatons<\/li>\n      <\/ul>\n    <\/div>\n\n    <p class=\"eco-tool__note\">\n      This assumes the asteroid\u2019s kinetic energy is released explosively in the atmosphere or on impact.\n    <\/p>\n  <\/div>\n\n  <details class=\"eco-tool__details\">\n    <summary class=\"eco-tool__summary\">How we calculate<\/summary>\n    <div class=\"eco-tool__details-body\">\n      <p class=\"eco-tool__text\">\n        Energy = \u00bd \u00d7 mass \u00d7 velocity\u00b2. Mass is estimated from asteroid volume and density.\n        1 megaton TNT \u2248 4.184 \u00d7 10\u00b9\u2075 joules.\n      <\/p>\n    <\/div>\n  <\/details>\n<\/div>\n\n<style>\n.eco-tool{\n  border: 1px solid rgba(0,0,0,.12);\n  border-radius: 12px;\n  padding: 16px;\n}\n\n.eco-tool__grid3{\n  display: grid;\n  grid-template-columns: 1fr;\n  gap: 16px;\n}\n@media (min-width: 860px){\n  .eco-tool__grid3{ grid-template-columns: 1fr 1fr 1fr; }\n}\n\n.eco-tool__field{\n  display: flex;\n  flex-direction: column;\n  gap: 6px;\n}\n\n.eco-tool__label{ font-weight: 600; }\n\n.eco-tool__input{\n  height: 44px;\n  padding: 0 12px;\n  border: 1px solid rgba(0,0,0,.2);\n  border-radius: 10px;\n  font: inherit;\n}\n\n.eco-tool select.eco-tool__input{\n  appearance: none;\n  padding-right: 40px;\n}\n\n.eco-tool__hint{\n  font-size: .92em;\n  opacity: .78;\n  min-height: 38px;\n}\n\n.eco-tool__actions{\n  display: flex;\n  gap: 10px;\n  margin-top: 16px;\n  align-items: center;\n}\n\n.eco-tool__btn{ padding: 10px 22px; }\n\n.eco-tool__btn--ghost{\n  background: transparent !important;\n  border: 1px solid rgba(0,0,0,.2) !important;\n}\n\n.eco-tool__error{\n  font-weight: 600;\n}\n\n.eco-tool__cards{\n  display: grid;\n  grid-template-columns: 1fr;\n  gap: 10px;\n  margin-top: 12px;\n}\n@media (min-width: 860px){\n  .eco-tool__cards{ grid-template-columns: 1fr 1fr; }\n}\n\n.eco-tool__card{\n  border: 1px solid rgba(0,0,0,.12);\n  border-radius: 12px;\n  padding: 12px;\n}\n\n.eco-tool__card--wide{ margin-top: 10px; }\n\n.eco-tool__metric-label{ opacity: .85; font-weight: 600; }\n.eco-tool__metric-value{ font-size: 1.6em; font-weight: 800; margin-top: 6px; }\n.eco-tool__metric-sub{ opacity: .85; margin-top: 4px; }\n\n.eco-tool__note{ margin-top: 10px; opacity: .9; }\n\n.eco-tool__details{ margin-top: 14px; }\n.eco-tool__summary{ cursor: pointer; font-weight: 700; }\n<\/style>\n\n<script>\n(function(){\n  const S = \"9f4a7\";\n  const el = (id) => document.getElementById(id + \"-\" + S);\n\n  const dEl = el(\"eco-ast-diameter\");\n  const vEl = el(\"eco-ast-speed\");\n  const tEl = el(\"eco-ast-type\");\n\n  const calcBtn = el(\"eco-ast-calc\");\n  const resetBtn = el(\"eco-ast-reset\");\n  const errorEl = el(\"eco-ast-error\");\n\n  const resultEl = el(\"eco-ast-result\");\n  const mtEl = el(\"eco-ast-mt\");\n  const bombEl = el(\"eco-ast-bombs\");\n\n  const JOULES_PER_MEGATON = 4.184e15;\n  const HIROSHIMA_MT = 0.015; \/\/ ~15 kilotons\n\n  function setError(msg){\n    errorEl.textContent = msg || \"\";\n  }\n\n  function calculate(){\n    setError(\"\");\n\n    const d = Number(dEl.value);\n    const v = Number(vEl.value) * 1000; \/\/ km\/s \u2192 m\/s\n    const density = Number(tEl.value);\n\n    if (!d || !v){\n      setError(\"Please enter valid values.\");\n      resultEl.hidden = true;\n      return;\n    }\n\n    const radius = d \/ 2;\n    const volume = (4\/3) * Math.PI * Math.pow(radius, 3);\n    const mass = volume * density;\n\n    const energyJ = 0.5 * mass * v * v;\n    const megatons = energyJ \/ JOULES_PER_MEGATON;\n\n    const bombs = megatons \/ HIROSHIMA_MT;\n\n    mtEl.textContent = megatons.toLocaleString(undefined,{maximumFractionDigits:1});\n    bombEl.textContent = bombs.toLocaleString(undefined,{maximumFractionDigits:0});\n\n    resultEl.hidden = false;\n  }\n\n  function reset(){\n    dEl.value = \"50\";\n    vEl.value = \"20\";\n    tEl.value = \"3000\";\n    resultEl.hidden = true;\n    setError(\"\");\n  }\n\n  calcBtn.addEventListener(\"click\", calculate);\n  resetBtn.addEventListener(\"click\", reset);\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Asteroid Impact Energy Calculator Estimate the explosive energy of an asteroid impact based on its size and speed. Results are approximate and for educational purposes. Asteroid diameter (meters) Example: Chelyabinsk&hellip;<\/p>\n","protected":false},"author":2,"featured_media":0,"parent":2295,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_sitemap_exclude":false,"_sitemap_priority":"","_sitemap_frequency":"","footnotes":""},"_links":{"self":[{"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages\/2247"}],"collection":[{"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/science-x.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2247"}],"version-history":[{"count":2,"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages\/2247\/revisions"}],"predecessor-version":[{"id":2249,"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages\/2247\/revisions\/2249"}],"up":[{"embeddable":true,"href":"https:\/\/science-x.net\/index.php?rest_route=\/wp\/v2\/pages\/2295"}],"wp:attachment":[{"href":"https:\/\/science-x.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2247"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}