18 Dec
2007
18 Dec
'07
3:25 p.m.
ANDE is warming. See "side A telemetry" link on the web page a few inches below the chart: http://www.ew.usna.edu/~bruninga/ande-ops.html
But the temperature is also rising because each day, ANDE's orbit is precessing into more and more sun. But it looks to me like the solar beta angle maximizes on the 19th and then eclipses start increasing in length again.
SO any heating after the 19th is re-entry heat.
I did my beta angle predictions by eyeball with Instantrack. If anyone has a better forcast of beta angle, it would be a useful data point beyond which temperature rises are due to re-entry. (or so it woiuld seem to me)...
Bob WB4APR
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Robert Bruninga