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{ "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/HVKAMIY4HHRBU7SKKA3LMOPJ646AURCC/", "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/", "message_id": "CAJUhCTMDXFCRCqf0b+2eh1xT2E2LMEPHVRDY-gWJS+zmNYbjmg@mail.gmail.com", "message_id_hash": "HVKAMIY4HHRBU7SKKA3LMOPJ646AURCC", "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/7FUVE5ZRIAGR5GCMNDLGYW3MIAWKIDR4/", "sender": { "address": "normanlizeth (a) gmail.com", "mailman_id": null, "emails": null }, "sender_name": "Lizeth Norman", "subject": "[amsat-bb] Re: G3RUH plan 13 algorithm help", "date": "2014-01-24T09:50:22Z", "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/QNGYCCKXKDCVHBFHTUY2HGD6FIE2MFMT/", "children": [], "votes": { "likes": 0, "dislikes": 0, "status": "neutral" }, "content": "Right Angle (of the) Ascending Node? I think I got it. Much to play with\nhere.\nNorm n3ykf\n\n\nOn Fri, Jan 24, 2014 at 4:38 AM, David Johnson\n<[email protected]>wrote:\n\n> HI,\n>\n> Right Ascention of the Ascending node.\n>\n> The point in the orbit at which it crosses the equator going northbound.\n>\n> Here 's a good example:\n>\n> http://www.pe0sat.vgnet.nl/satellite/\n>\n> 73\n>\n> Dave, G4DPZ\n>\n> On 24/01/14 08:59, Lizeth Norman wrote:\n>\n>> *HI all,Found this at this\n>> page:http://www.amsat.org/amsat/articles/g3ruh/111.html\n>> <http://www.amsat.org/amsat/articles/g3ruh/111.html>Orbit Plane:* Fixed\n>>\n>> (almost) with respect to the stars, in orientation defined by argument of\n>> perigee, inclination and RAAN.\n>> Origin: Earth's centre.\n>> X: Directed towards perigee\n>> Y: 90 degrees from perigee round the orbit in direction of satellite's\n>> motion\n>> Z: Perpendicular to orbit plane\n>> I think I understand most of the math in the algorithm. In the above\n>> context, what does RAAN mean?\n>> Sorry for being obtuse!\n>> Norm n3ykf\n>> _______________________________________________\n>> Sent via [email protected]. Opinions expressed are those of the author.\n>> Not an AMSAT-NA member? Join now to support the amateur satellite program!\n>> Subscription settings: http://amsat.org/mailman/listinfo/amsat-bb\n>>\n>\n>\n", "attachments": [] }