Tagline 072812 - For Each Posting

From: Brad Young (allenb_young@yahoo.com)
Date: Sun Jul 29 2012 - 00:06:23 UTC

  • Next message: Brad Young: "BY O 072912"

    For me, satellite observation is a tactile, visual, and real-time endeavor. I enjoy seeing the object as predicted or, even more rewarding, recovering one that has strayed from the predicted path due to a maneuver or built up errors in the prediction. Occasionally, an unidentified object (or UNID) is seen, and can be reported so that a guess can be made as to what it may be. New launches are fun to catch before everyone else or confirm. Variable brightness objects are perhaps the most interesting to see, with fast flashes or slow "rolls" allowing one to imagine the motion of the object in space, hundreds of miles above our heads. And, in certain seasons we can see satellites that stay right above our heads (e.g. Direct TV and XM Radio) flaring up and visible even at 22,000 miles away. And satellites can be seen even in the middle of a city, on even partly cloudy or moonlit nights. There is quite a show above our heads - if you know where and when to look!
    All binocular observations with 20 x 80 Garrett binoculars mounted on a fluid pan head tripod unless otherwise noted. Observations of fainter satellites with 12" Orion Dobsonian telescope, usually at 125x. Positions reported in IOD format, as described at http://www.satobs.org/position/IODformat.html
    Positional reports are made to provide analysts involved with seesat-l the data required to maintain predicted orbits of unpublished orbits of satellites. The analysts then provide TLE (two line element) data that can be used to predict future passes. This symbiotic relationship is described with some technical details athttp://www.satobs.org/tletools.html
    All positional reports refer to the site they were made at - TULSA1 and TULSA2 being the most common. Other sites as needed will be reported with the GPS coordinates for them. Each site has a unique COSPAR site number, or has a dummy site number (e.g. 9999) for use with the observation reduction programs available.
    Variable satellites are reported in PPAS format http://www.prismnet.com/~mmccants/bwgs/ppasfmt.html
    Observation of variable satellites can provide information on the rotational period of spent rockets and retired unstabilized payloads. The data can be used as described at http://www.satobs.org/tumble/flashpm.html
    Flaring geosats are reported as described at http://satobs.org/seesat/Oct-2007/0244.html
    Brad Young
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