Updated elements, X-37B OTV-1 std mag

From: Ted Molczan (ssl3molcz@rogers.com)
Date: Wed Jun 30 2010 - 17:41:30 UTC

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    Russell Eberst, Kevin Fetter, Marco Langbroek, Pierre Neirinck, Steve Newcomb, Alberto Rango, Mike
    Waterman, Brad Young, and I, contributed observations used to determine one or more of the following
    element sets.
    
    USA 129                                                  291 X 912 km
    1 24680U 96072A   10181.12290460  .00002703  00000-0  40676-4 0    01
    2 24680  97.7753 232.6780 0444918 276.5714  78.5055 14.87991390    01
    Arc 20100619.1-0630.13 WRMS resid 0.033 totl 0.010 xtrk
    
    USA 161                                                  308 X 943 km
    1 26934U 01044A   10180.99152430  .00004003  00000-0  80483-4 0    03
    2 26934  97.9483 293.6380 0453260 204.3685 153.5490 14.80133479    02
    Arc 20100622.97-06300 WRMS resid 0.030 totl 0.010 xtrk
    
    USA 186                                                  256 X 996 km
    1 28888U 05042A   10181.09348328  .00010079  00000-0  89631-4 0    04
    2 28888  97.8970 244.3817 0528690  12.4325 348.9356 14.80122282    00
    Arc 20100616.85-0630.1 WRMS resid 0.028 totl 0.017 xtrk
    
    I have updated my standard magnitude analysis of X-37B OTV-1 (10015A / 36514), based on the 45
    positional observations reported to-date that include visual magnitude. Here is a plot of magnitude
    normalized to 1000 km range vs. phase angle:
    
    http://satobs.org/seesat_ref/misc/10015A_std_mag_2.pdf
    
    The standard magnitude is 4.2 +/- 1 (1000 km, 90 deg phase angle). Coefficient of phase is 0.010
    mag/deg.
    
    The object reaches magnitude 2 +/- 1 when observed at high elevation, and well illuminated.
    
    Ted Molczan
    
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