PPAS/PNAS obs 4160 (BD) 2012-02-04

From: Bram Dorreman (bram.dorreman@gmail.com)
Date: Sat Feb 04 2012 - 23:20:52 UTC

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    About -12 degrees centigrade while observing and very bright moon.
    Horizons look orange, probably reflection of our streetlights.
    
    PPAS-records, for format see
    http://www.satobs.org/tumble/flashpm.html#PPASformat
    Using 7x50 binoculars
    
    yy-nnncc yy-mm-dd hh:mm:ss.s ooo sss.s s.s nnn ff.fff comments
    11- 68 B 12-02-04 17:22:51.6 BD   46.5 0.0   2 23.2
    
    PNAS-records:
    Using 7x50 binoculars
    
    yy-nnncc yy-mm-dd hh:mm:ss   BD  sss.s comments
    06- 21 A 12-02-04 17:49:24   BD        S; +2.8 0648+12 111!31;
    hindered by moonlight
    07- 59 A 12-02-04 17:53:22   BD        L; +4.3 0444+13 146!48
    01- 56 F 12-02-04 17:59:43   BD        S; +3.6 0745+26 90!34
    
    Most of my PNAS-observations concern magnitude and variability checks.
    Especially when an object flares (code L)
    Therefore I report something like "reconstructed observation time and place"
    These are obtained from Guide 8 by looking at the observed time or place
    from voice-recorded comment.
    It is my experience that a combination of a good position observation and
    magnitude estimate is not always so easy. For classified objects I pay
    most attention to positions, for all other objects I try a PNAS-record.
    
    If comments start with L it concerns a flare.
    In some cases the azimuth of both satellite and sun are given. Several
    satellites have a short brightening when they have the same azimuth as
    the sun or are just opposite to the sun.
    
    In PNAS-observations the comments may give
    the position of the object roughly indicated in format
    hhmm+dd aaa!ee in which
    - hhmm is the right ascension
    - sign of declination as separator
    - dd is the declination
    - aaa is the azimuth (north = 0)
    - ee is the altitude
    - ! (exclamation mark is separator)
    
    Bram Dorreman
    Site 4160: 51.27931 N, 5.47683 E, 35 m (WGS84)
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