Re: A mytery object

From: ComHem (b.gimle@comhem.se)
Date: Mon Feb 12 2007 - 07:36:49 EST

  • Next message: Mgr. CSc. Antonín Vítek: ".Re: japan spy sat launch, any details"

    I added the RA/Dec values given to SkyMap's "deepsky.txt" file
    and predicted ETS 6.
    The first point is suspiciously perfect, though the reminder is
    progressively distant from the (RA/Dec "Equ") track plot.
    
    Switching to Stereographic projection, and Alt/Az ("Hor")
    coordinates as of 21:28, the match is almost perfect.
    So it appears the RA/Dec was computed from alt/az values
    using siderial time of 21:28 instead of actual time.
    
    ETS 6 should be flashing with 7 (?) second interval.
    
    See also http://www.satobs.org/seesat/Feb-2007/0079.html
    http://www.satobs.org/seesat/Feb-2007/0080.html
    
    -- Björn Gimle                                            --
    -- COSPAR 5918 WGS84,  +18.10127 (E), +59.29813 (N), 44 m --
    -- COSPAR 5919, MALMA, +18.6206  (E), +59.2615  (N), 33 m --
    -- COSPAR 5920, FRUVIK,+18.4820  (E), +59.3260  (N), 11 m --
    
    > .... Observing site: Pieksamaki, Finland E 27.10894 N 62.25807
    >
    > Date: 2007-02-07
    > --------------------------------------------------------------------
    >    UT      az   altitude        altitude            RA       dec
    >                 with refraction without refraction
    >  (J2000.0) --------------------------------------------------------------------
    > 21:28:02  130.26 19.16          19.11               172.80   0.31
    > 21:31:06  129.27 18.56          18.51               173.89   0.08
    > 21:34:11  128.10 17.89          17.84               175.16  -0.13
    > 21:40:20  125.81 16.41          16.36               177.74  -0.69
    > 21:46:29  123.39 14.71          14.65               180.56  -1.38
    > 21:49:34  122.03 13.71          13.64               182.17  -1.78
    > 21:52:38  120.41 12.55          12.48               184.07  -2.22
    > 21:55:43  119.12 11.41          11.33               185.70  -2.76
    > 22:04:57  114.50  7.71           7.60               191.41  -4.26
    > 22:11:06  110.71  4.35           4.18               196.30  -5.72
    > --------------------------------------------------------------------
    > ....
    
    
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