Re: Falcon 9

From: Dr. T.S. Kelso (TS.Kelso@celestrak.com)
Date: Tue Oct 01 2013 - 22:09:44 UTC

  • Next message: Jonathan McDowell: "Re: Falcon 9"

    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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