Re: Spacex Dragon undocking date/time

From: Bob Christy (bob@zarya.info)
Date: Wed May 30 2012 - 17:24:30 UTC

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    Apologies - I pasted the wrong NOTAM into the previous version of this 
    message......
    
    Hot off the press from SpaceX and NASA, but a little different from 
    NASA's figures yesterday.
    
    May 31 (all UTC):
    
    08:05 - undocking using the RMS (approx)
    09:35 - release from RMS (approx)
    
    3x engine firings to separate from ISS
    
    14:51 - retro-fire
    15:44 - splashdown (about 900 km, announced as 490 nautical miles, SW of 
    Los Angeles, my estimate based on the NOTAM area.... near 26 north, 
    120.5 west)
    
    NOTAM:
    
    05/109 (A2263/12) - AIRSPACE DCC SPACE X DRAGON REENTRY STATIONARY 
    RESERVATION WITHIN AN AREA BNDD BY 2445N/12000W 2518N/12048W 
    2719N/12250W 2911N/12439W 3025N/12546W 3105N/12619W 3140N/12601W 
    3155N/12518W 3128N/12428W 3028N/12300W 2843N/12053W 2740N/12000W 
    SFC-UNL. 31 MAY 15:05 2012 UNTIL 31 MAY 16:15 2012. CREATED: 28 MAY 
    15:09 2012
    
    Bob Christy
    
    On 30/05/2012 00:43, Bob Christy wrote:
    > The times I gave came from NASA a few minutes before I posted them.
    > Spaceflight Now's 10:00 is an approximate time issued by NASA a couple
    > of days ago. The splashdown time is close to the estimate I posted
    > earlier in the day.
    >
    > If/when SpaceX releases any other relevant times such as the de-orbit
    > burn, I'll add them to the online diary: http://www.zarya.info/Calendar.php
    >
    > Bob Christy
    >
    > On 29/05/2012 23:55, Robert Holdsworth wrote:
    >> Not sure whether this is earlier or later than the source used by Bob, but the most recent ISS status report gives a separation time of approximately 1020 UTC.  (Spaceflight Now says 1000 UTC but I guess that may be based on older information.)
    >>
    >> I guess there may be some change to the trajectory before the deorbit burn but in any case we could not have any illuminated passes here during the timeframe between separation and splashdown.
    >>
    >>
    >> However there is a significant New Zealand connection in that Auckland University of Technology is tasked with monitoring the de-orbit and advising Space-X of the location of splashdown.
    >>
    >>
    >> So John if you want to know when and where the burn and estimated splashdown will occur you could perhaps contact AUT directly.
    >>
    >> (NASA-TV commences its coverage of the burn and splashdown from 1415  UTC onwards and no doubt that coverage would commence a few minutes or more before the burn is due to happen.)
    >>
    >>
    >> Robert Holdsworth
    >>
    >> Wainuiomata
    >> New Zealand
    >>
    >>
    >>
    >>
    >>
    >>
    >>
    >> ________________________________
    >> From: Bob Christy<bob@zarya.info>
    >> To: seesat-l@satobs.org
    >> Sent: Wednesday, 30 May 2012 9:52 AM
    >> Subject: Re: Spacex Dragon undocking date/time
    >>
    >> NASA has published some actual times, undocking from Harmony using the
    >> RMS - 10:10 UTC, splashdown - 15:44 UTC.
    >>
    >> Bob Christy
    >>
    >> On 29/05/2012 08:53, Bob Christy wrote:
    >>> Dragon COTS 2+ is currently set to undock May 31 about 10:00 UTC,
    >>> landing will be four circuits later at about 15:50 UTC. There should be
    >>> visibility from North America in the period between.
    >>>
    >>> Bob Christy
    >>>
    >>>
    >>> On 29/05/2012 03:12, John Burns wrote:
    >>>> Hi,
    >>>> I note that I've got three particularly bright pass predictions (From
    >>>> New Zealand) for the ISS coming up.
    >>>> 20120530 0615 UTC @ -1.9 mag
    >>>> 20120531 0657 UTC @ -2.7 mag
    >>>> 20120601 0603 UTC @ -2.8 mag
    >>>>
    >>>> I'm interested to know if there is any firm time set for the Undocking
    >>>> of Dragon and if there will be a brief orbit period before the deorbit
    >>>> burn. Or in other words, will I be able to see Dragon as a separate
    >>>> point of light during one of the above passes.
    >>>>
    >>>> Thanks
    >>>>
    >>>> John Burns
    >>>>
    >>>> _
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