Re: And I thought if Nanosail D was obseved flashing, means it's rotating

From: Ralf Vandebergh (
Date: Fri May 27 2011 - 12:14:06 UTC

  • Next message: Ted Molczan: "RE: And I thought if Nanosail D was obseved flashing, means it's rotating"

    Just wanted to link to my website to show an image to support this 
    discussion, but even that is rejected.
    So It's even not possible to support a discussion by showing an image.
    -----Oorspronkelijk bericht----- 
    From: Marco Langbroek
    Sent: Friday, May 27, 2011 11:33 AM
    To: ; satelliet lijst (SeeSat)
    Subject: Re: And I thought if Nanosail D was obseved flashing,means it's 
    Op 27-5-2011 11:22, Kevin Fetter schreef:
    > Hi Marco and others
    > I was just responding, to the where they say, The curious variations 
    > suggest that the sail is tumbling.
    > So to me, they are saying, there are not sure it's not tumbling.
    > Can't observe it are anything else, as it been 2 weeks, of cloud filled 
    > skies at night.
    Ah okay, now I get what you mean. I thought you were starting a semantic
    discussion... ;-)
    To me, the rapid continuous flashing is indeed a sign it must be tumbling. 
    occasional flaring might be due to changing solar angle and a fixed 
    surface, rapid flashing is not likely explained that way.
    With a light object such as this solar sail with presumably an unusually 
    surface to mass ratio, I wonder what happens if a small meteoroid (or small
    piece of space debris) hits a corner of it: could it transfer enough 
    for the sail to start to tumble?
    Clouded out here too by the way.
    - Marco
    Dr Marco Langbroek  -  SatTrackCam Leiden, the Netherlands.
    Cospar 4353 (Leiden):   52.15412 N, 4.49081 E (WGS84), +0 m ASL
    Cospar 4354 (De Wilck): 52.11685 N, 4.56016 E (WGS84), -2 m ASL
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