Dear all, I have just open the e-mail after 3 days off, sorry to be late. As part of my research, I have analysed long term TLE (1959 - 2004) of several objects. I found that the variation of BSTAR similar to F10.7 cm of solar activity (~11 yr cycle). I will analyse the correlation with the geomagetic Ap indeces. The atmospheric drag (indicated by BSTAR) is affected by both solar and geomagnetic activity. The ~20 days variation of BSTAR (I found > 20 days) is related to solar and geomagnetic variation (the plots of BSTAR dan F10.7 are similar). Thomas Djamaluddin National Institute of Aeronautics and Space (LAPAN), Indonesia _________________________________________________________________ Protect your PC - get McAfee.com VirusScan Online http://clinic.mcafee.com/clinic/ibuy/campaign.asp?cid=3963 ------------------------------------------------------------------------- Subscribe/Unsubscribe info, Frequently Asked Questions, SeeSat-L archive: http://www.satobs.org/seesat/seesatindex.html
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