Re: Falcon 9

From: Dr. T.S. Kelso (TS.Kelso@celestrak.com)
Date: Tue Oct 01 2013 - 23:11:18 UTC

  • Next message: Dr. T.S. Kelso: "Re: Falcon 9"

    We now have size and mass for all of the payloads, so their dispersion 
    can be seen at:
    
         http://celestrak.com/events/2013-055-3D-1.gif
    
    Positions relative to the TLE provided by Dr. Langley and OBJECT B can 
    be seen here:
    
         http://celestrak.com/events/2013-055-3D-2.gif
    
    And finally, since someone asked for a Gabbard plot, that can be found at:
    
         http://celestrak.com/events/2013-055-Gabbard.pdf
    
    It doesn't seem to suggest an explosion.
    
    Here's hoping we get a much clearer picture soon!  - TS
    
    Dr. T.S. Kelso
    CelesTrak, http://celestrak.com
    E-Mail: TS.Kelso@celestrak.com
    
    On 2013-10-01 12:21, Jonathan McDowell wrote:
    > We don't know where to look for the second stage - it may have had an
    > impulse of unknown magnitude
    > so could be any of A to V -one might guess A as it would be the easy
    > thing to track.
    > B is probably CASSIOPE
    > Perhaps ALL of C to V are second stage insulation debris, and  the other
    > payloads - POPACS, DANDE, CUSAT - have not yet been cataloged at all, and will
    > only be spotted once they are far enough separated from CASSIOPE to be
    > distinguishable!
    >
    >
    > On 1 October 2013 18:09, Dr. T.S. Kelso <TS.Kelso@celestrak.com> wrote:
    >> For those of you who might be interested, the image at:
    >>
    >>        http://celestrak.com/events/2013-055-3D-3.gif
    >>
    >> shows where we are right now. The POPACS orbits (green) are based on
    >> SpaceX state vectors at deployment and where we know the masses and
    >> sizes to calculate the orbits. The CASSIOPE TLE Dr. Langley provided is
    >> in blue. The yellow orbits are based on SpaceX deployment state vectors
    >> and public information on the drag characteristics (size and mass) for
    >> CASSIOPE and DANDE (we're working to get that for CUSAT). We do not have
    >> deployment velocities or any post-deployment maneuver info (only CUSAT
    >> looks to be maneuverable). These objects are all tracking close to
    >> OBJECT B.
    >>
    >> However, you can see that the remaining 19 objects are scattered all
    >> around the orbit plane. Something isn't adding up. I provide this
    >> information to hopefully help others sort through the possibilities.  - TS
    >>
    >> Dr. T.S. Kelso
    >> CelesTrak, http://celestrak.com
    >> E-Mail: TS.Kelso@celestrak.com
    >>
    >> On 2013-10-01 08:08, Jonathan McDowell wrote:
    >>> This is pretty close to the object being tracked as 2013-055B  39266
    >>>
    >>> On 1 October 2013 09:57, Richard B. Langley <lang@unb.ca> wrote:
    >>>> CASSIOPE
    >>>> 1 99999U 99999Z   13272.64230504  .00074327  00000-0  25352-2 0 00004
    >>>> 2 99999 080.9958 315.2504 0800469 157.7147 206.1636 13.95988889000018
    >>>>
    >>>>> Richard Langley wrote:
    >>>>>
    >>>>>> If anybody wants TLEs for CASSIOPE (the main payload on the Falcon 9), I have them from
    >>>>>> spacecraft tracking. I can send them directly or post them to the list if that is
    >>>>>> permissible.
    >>>>> It is permissible, provided that the TLEs did not originate at USSTRATCOM (which operates the Space Track site).
    >>>>>
    >>>>> Ted Molczan
    >>>> -----------------------------------------------------------------------------
    >>>> | Richard B. Langley                            E-mail: lang@unb.ca         |
    >>>> | Geodetic Research Laboratory                  Web: http://www.unb.ca/GGE/ |
    >>>> | Dept. of Geodesy and Geomatics Engineering    Phone:    +1 506 453-5142   |
    >>>> | University of New Brunswick                   Fax:      +1 506 453-4943   |
    >>>> | Fredericton, N.B., Canada  E3B 5A3                                        |
    >>>> |        Fredericton?  Where's that?  See: http://www.fredericton.ca/       |
    >>>> -----------------------------------------------------------------------------
    >>>>
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