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[{"id":"e1089333.1ef77","type":"inject","name":"Trigger ISS Distance Check","topic":"","payload":"","payloadType":"none","repeat":"","crontab":"","once":false,"x":179,"y":94,"z":"56b706ba.a948f8","wires":[["943513b6.6bcaf"]]},{"id":"943513b6.6bcaf","type":"http request","name":"Get ISS Location","method":"GET","url":"http://api.wheretheiss.at/v1/satellites/25544","x":411,"y":94,"z":"56b706ba.a948f8","wires":[["19d3c8af.e62c37"]]},{"id":"19d3c8af.e62c37","type":"function","name":"Sort the Data","func":"var iss_json = JSON.parse(msg.payload);\nvar iss_lat = iss_json.latitude;\nvar iss_long = iss_json.longitude;\nvar home_lat = 51.026551;\nvar home_long = -1.398004;\n\n\n\nmsg.payload = {};\nmsg.payload.iss_lat = iss_lat;\nmsg.payload.iss_long = iss_long;\nmsg.payload.home_lat = home_lat;\nmsg.payload.home_long = home_long;\nreturn msg;","outputs":1,"x":399.5,"y":134,"z":"56b706ba.a948f8","wires":[["7746cae5.88b934"]]},{"id":"7746cae5.88b934","type":"function","name":"Calculate Distance","func":"var degrees_to_radians = Math.PI/180.0;\n\nvar phi1 = (90.0 - msg.payload.home_lat)*degrees_to_radians;\nvar phi2 = (90.0 - msg.payload.iss_lat)*degrees_to_radians;\nvar theta1 = msg.payload.home_long*degrees_to_radians;\nvar theta2 = msg.payload.iss_long*degrees_to_radians;\nvar cos = (Math.sin(phi1)*Math.sin(phi2)*Math.cos(theta1 - theta2) + Math.cos(phi1)*Math.cos(phi2));\nvar arc = Math.acos( cos );\nvar distance = arc *3960;\nmsg.payload.distance = distance;\nreturn msg;","outputs":1,"x":416.5,"y":174,"z":"56b706ba.a948f8","wires":[["a2b97921.5d4688"]]},{"id":"a2b97921.5d4688","type":"debug","name":"","active":true,"console":false,"complete":false,"x":605,"y":167,"z":"56b706ba.a948f8","wires":[]}] |