28:null 29:["$","title",null,{"children":"The Moon in 2023 | Visnu Pitiyanuvath | Observable"}] 2e:T43e,# The Moon in 2023 ## From [NASA Scientific Visualization Studio: Moon Phase and Libration](https://svs.gsfc.nasa.gov/5048) by [Ernie Wright](https://svs.gsfc.nasa.gov/search/?people=Ernie%20Wright), [Noah Petro](https://svs.gsfc.nasa.gov/search/?people=Noah%20Petro), and [David Ladd](https://svs.gsfc.nasa.gov/search/?people=David%20Ladd) Forked from [@forresto](/@forresto/the-moon-now). Scrub through NASA’s video renders of the moon for 2023. Videos are large and may stutter until fully loaded. Feel free to grab the scrubber and move it to your preferred time. Maybe surprisingly, these are 3D renders derived from moon orbiter data, not successive images captured through a ground-based telescope: > Lunar Reconnaissance Orbiter ([LRO](https://lunar.gsfc.nasa.gov/)) has been in orbit around the Moon since the summer of 2009. Its laser altimeter ([LOLA](https://lola.gsfc.nasa.gov/)) and camera ([LROC](http://lroc.sese.asu.edu/)) are recording the rugged, airless lunar terrain in exceptional detail, making it possible to visualize the Moon with unprecedented fidelity. 2f:[{"id":"ba17df57a4a9d1ac238f051aaf3b7423e8773cbfef6bba6cfba33b66397a2dfb1304705edd389368881e4f03f2f24333e2321cd306bbc7f08a3b502e95a38fbe","href":"https://static.observableusercontent.com/files/ba17df57a4a9d1ac238f051aaf3b7423e8773cbfef6bba6cfba33b66397a2dfb1304705edd389368881e4f03f2f24333e2321cd306bbc7f08a3b502e95a38fbe","name":"mooninfo_2023.json","type":"application/json","lastModified":1678745143861.125,"size":2093728}] 2c:{"id":"9b062c0b2c836242","slug":"the-moon-in-2023","title":"The Moon in 2023","thumbnail":"e73a671b584ba5c65d005d172011146ba1ed897352aca814e555c5b53d95e16f","access_level":"public","create_time":"$D2023-03-13T22:01:30.084Z","update_time":"$D2023-03-13T22:09:34.596Z","view_time":null,"first_public_time":"$D2023-03-13T22:06:44.392Z","has_unpublished_edits":null,"fork":{"id":"2f5ac114624aab72","slug":"the-moon-in-2022","title":"The Moon in 2022","owner":{"id":"31b136fdb993b00a","login":"visnup","name":"Visnu Pitiyanuvath"}},"stars":1,"starred":false,"owner":{"type":"team","id":"31b136fdb993b00a","login":"visnup","name":"Visnu Pitiyanuvath","avatar_url":"https://avatars-next.observableusercontent.com/b847c4c49993b1df7599d355f47dc0ad9c2dcf43439ce9e8f3410e6368b3aac9","tier":"pro_2026"},"version":732,"publish_version":null,"role":null,"authored":false,"authors":[{"type":"individual","id":"dbf69c13a14d2f62","login":"visnup","name":"Visnu Pitiyanuvath","avatar_url":"https://avatars-next.observableusercontent.com/b847c4c49993b1df7599d355f47dc0ad9c2dcf43439ce9e8f3410e6368b3aac9","tier":null}],"members":[{"type":"individual","id":"dbf69c13a14d2f62","login":"visnup","name":"Visnu Pitiyanuvath","avatar_url":"https://avatars-next.observableusercontent.com/b847c4c49993b1df7599d355f47dc0ad9c2dcf43439ce9e8f3410e6368b3aac9","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":true,"trashed":false,"lapsed":null,"subscribed":null,"forks":0,"collection":null,"type":"notebook","body":{"title":"The Moon in 2023","cells":[{"id":0,"value":"$2e","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":316,"value":"viewof hour = Scrubber(hours, {\n format: (hour) => hour.time,\n delay: 50,\n loop: false\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":456,"value":"Plot.plot({\n marks: [\n Plot.tickX(hours, { x: \"t\", stroke: \"phase\" }),\n Plot.dot([hour], { x: \"t\", stroke: \"salmon\", r: 3 })\n ],\n x: { label: null },\n color: { range: [\"darkgray\", \"white\"] },\n marginTop: 1,\n marginLeft: 70,\n marginBottom: 20,\n height: 26,\n width: width - 148\n})","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":234,"value":"

","pinned":false,"hidden":false,"mode":"html","author":"$undefined","summary":"$undefined","output":"combined","database":"$undefined"},{"id":658,"value":"The videos are timed to correspond to the entire year exactly. NASA publishes hourly calculations alongside them. So, the index of the current hour can be used to set the videos to the corresponding timestamp.","pinned":false,"hidden":false,"mode":"md","author":"$undefined","summary":"$undefined","output":"","database":"$undefined"},{"id":718,"value":"hours","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"","database":"$undefined"},{"id":491,"value":"hours = (await FileAttachment(\"mooninfo_2023.json\").json()).map((d, i) =>\n Object.defineProperties(d, {\n i: { value: i },\n t: { value: parse(d.time) }\n })\n)","pinned":true,"hidden":true,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":242,"value":"videoTime = orbit.currentTime = moon.currentTime = (hour.i / (hours.length - 1)) * duration","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":284,"value":"duration = Generators.observe((change) => {\n const inputted = () => change(moon.duration);\n moon.pause();\n moon.addEventListener(\"loadedmetadata\", inputted);\n change(moon.duration || 292);\n return () => moon.removeEventListener(\"loadedmetadata\", inputted);\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":432,"value":"moon = combined.querySelector(\"video.moon\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":436,"value":"orbit = combined.querySelector(\"video.orbit\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":503,"value":"parse = d3.utcParse(\"%d %b %Y %H:%M UT\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":370,"value":"","pinned":true,"hidden":false,"mode":"html","author":"$undefined","summary":"$undefined","output":"","database":"$undefined"},{"id":311,"value":"import { Scrubber } from \"@mbostock/scrubber\"","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W2f","stdlib":"1","titling":"auto"}} 2d:"$2c:body"