Check on variability of Kosmos-rockets

From: Bram Dorreman (bram.dorreman@skynet.be)
Date: Sun Jun 26 2005 - 09:14:18 EDT

  • Next message: Campbell's: "Satobs 26 June 2005"

    In a local meeting Tristan Cools (TC) requested other satellite observers:
    Leo Barhorst (LB) and me (BD) to check all possible LEO Kosmos rockets. This
    is to detect possible re-tumbling in time.
    
    LB already reports his findings in his PPAS reports.
    From now on I report my findings in them too.
    To check possible variability I think one should follow the satellite along
    a rather large arc of the visible transit. Especially in the direction of
    the sun variability might be shown, but is difficult.
    I regard a satellite as "Steady" (abbreviated S) when there is no magnitude
    change other than caused by change in range and phase angle.
    
    The objects with a definite flash period are already in my PPAS reports.
    Here follow the others.
    
    21231 1991-029B 2005-06-14 BD 34.1 s; 2005-06-15 LB 4.08 s!!
    24773 1997-017B 2005-06-22 BD 46.2 s
    
    I found steady: the Kosmos-rockets in the 83 ~1000 km series:
    
    07477 1974-079B
    07737 1975-028B
    09044 1976-077B
    09638 1976-128B
    10355 1977-087B
    11586 1979-090B
    11804 1980-039B
    12836 1981-091B
    13066 1982-012B may be it has an lp
    14085 1983-048B
    14966 1984-043B
    15360 1984-109B
    15598 1985-022B
    16494 1986-005B
    17240 1986-100B
    17360 1987-009B
    17526 1987-017B
    18403 1987-087B
    20150 1989-059B
    21797 1991-081B
    22488 1993-008B
    
    I found steady: the Kosmos-rockets in the 74 <~800 km series:
    
    04071 1969-070B
    04589 1970-086B
    08344 1975-094B
    08459 1975-112B
    08924 1976-061B
    10521 1977-119B
    13992 1983-031B
    19039 1988-029B
    21015 1990-111B
    22081 1992-053B
    
    More to check, also in other orbit-groups
    
    Bram Dorreman
    COSPAR 4160
    51 16' 45.5" N  5 28' 36.6" E (WGS84) 35 m
    
    
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