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{
    "url": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/2NQBUAYSJ6CM4235VXVSPUGGG5FNNIRH/?format=api",
    "mailinglist": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/?format=api",
    "message_id": "[email protected]",
    "message_id_hash": "2NQBUAYSJ6CM4235VXVSPUGGG5FNNIRH",
    "thread": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/thread/F57PA56FI3LI25LAFNZBYKZAGOIVMOZ2/?format=api",
    "sender": {
        "address": "wmy (a) isac.gov.in",
        "mailman_id": "2bbd6baf753f446a9a5b4e064039855a",
        "emails": "https://mailman.amsat.org/hyperkitty/api/sender/2bbd6baf753f446a9a5b4e064039855a/emails/?format=api"
    },
    "sender_name": "Mani VU2WMY",
    "subject": "[amsat-bb] Re: XW-1 == YAOGAN 8 ?",
    "date": "2009-12-17T03:24:36Z",
    "parent": "https://mailman.amsat.org/hyperkitty/api/list/[email protected]/email/DUZOV42PJ6F7WI7VLY2ZCJNJUVEFLXG7/?format=api",
    "children": [],
    "votes": {
        "likes": 0,
        "dislikes": 0,
        "status": "neutral"
    },
    "content": "Hi,\n\nYAOGAN 8 traveling faster could be due to possible initial orbit  \ncorrections and maneuvering that includes minor correction of  \ninjection velocity (delta V). The drag do influence even at  \ngeo-transfer and geo-synchronous orbits.\n\n73 de\nMani, VU2WMY\nSecretary & Station-In-Charge\nUpagrah Amateur Radio Club VU2URC\nISRO Satellite Centre\nAirport Road, Bangalore-560 017.\nPhone:(O)91-80-2508 2054/2192/2537\nMobile:  91-80-98803 41456\nE-mail ID: [email protected]\n            [email protected]\n            [email protected]\n\nQuoting Alexandru Csete <[email protected]>:\n\n> The influence of the drag force also depends on the mass since F=m*a,\n> so the same drag force will cause less deceleration on a heavier\n> satellite. You have to put this together with F=pressure*surface_area\n> to take both the size and the mass of the satellite into account.\n>\n> By the way, is there any significant atmospheric drag at 1200 km\n> altitude?\n>\n> 73\n> Alex OZ9AEC\n>\n>\n> On Wed, 16 Dec 2009 18:56:20 +0000\n> Nigel Gunn G8IFF/W8IFF <[email protected]> wrote:\n>\n>> OK, I'll revise my earlier question and suggest a reply.\n>>\n>> The physically larger satellite will have more atmospheric drag which\n>> will spiral it into a lower orbit. The lower orbit, the higher the\n>> velocity and thereforeit crosses your horizon earlier.\n>>\n>> Nigel Gunn G8IFF/W8IFF wrote:\n>>\n>> >\n>> > Is this correct that the higher mass satellite travels faster than\n>> > the lower mass of XW?\n>> >\n>>\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\n",
    "attachments": []
}