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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/BSKB5HBCVC7UBGHLK2HO2AG4W2DRROJE/",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/",
    "message_id": "[email protected]",
    "message_id_hash": "BSKB5HBCVC7UBGHLK2HO2AG4W2DRROJE",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/JPQKEC2ZWSQZ7BLDZYVVPS3E2T4LCIX2/",
    "sender": {
        "address": "w8eh-Ernie (a) cinci.rr.com",
        "mailman_id": null,
        "emails": null
    },
    "sender_name": "Ernie Howard",
    "subject": "[amsat-bb] Re: Lanrangian points",
    "date": "2007-01-12T11:58:51Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/BLHBC74Z5Y3ZFCMMWTAD3WSEUUOT5HZC/",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "\nI can recall that one or more of the Apollo moon missions was tasked with \nphotographing the L1 Lagrangian. They were trying to see if there were any \nobjects floating there. I don't remember the outcome.\n\n\nMarc Vermeersch wrote:\n> - The Lagrangian points L1, L2, L3 are not stable. A satellite positioned\n> there would require constant positions corrections: complex satellite. L4\n> and L5 are stable.\n> \n> - When n L points are populated and you want to populate another L point,\n> you have to solve an (n+2)-body problem. This becomes extremely complex.\n>  \n> - L4 and L5 are about the same distance from Earth as the moon: EME type\n> complications for communications.\n> \n> \n> http://www.physics.montana.edu/faculty/cornish/lagrange.pdf\n> \n> http://www.physics.montana.edu/faculty/cornish/lagrange.html\n> \n> http://en.wikipedia.org/wiki/Lagrangian_point\n> \n> http://www.esa.int/esaSC/SEMM17XJD1E_index_0.html\n> \n> \n> \n> -----Original Message-----\n> From: [email protected] [mailto:[email protected]] On\n> Behalf Of [email protected]\n> Sent: January 12, 2007 08:07\n> To: [email protected]\n> Subject: [amsat-bb] Lanrangian points\n> \n> Hello Amsat'ers\n> Is it possible or practical to have a communications satellite at the L1 or\n> L2 points.\n> 73 Bob W7LRD\n> Seattle\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> 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\n------------------------------------------------------\nErnie Howard, Jr    W8EH    Middletown, Ohio\nE-mail: [email protected]\nHow's the weather at W8EH? - http://wx.findu.com/w8eh\nWeb Page: http://home.cinci.rr.com/w8eh\n------------------------------------------------------\n",
    "attachments": []
}