Sunday, June 2, 2019

Jun 2—Jacob now transiting the Great Barrier Reef

Background: Notes here on our Google Earth tracking of Jacob Adoram         Index of Google Earth overlays.  Download the KLM file.

New KML on line now with new charts and routes  June 2 1524 PDT


For those who might be following this blog post, now is the time to turn on Google earth for hourly updates.

Jacob has turned to enter the region of the reefs so this is the last crucial step of the voyage. Positions online are updated hourly, but they are the average of the reported positions over the past 3 hours... we have to do that because the raw GPS data from the vessel is uncertain for reasons we explained earlier.

Also keep in mind it is pitch dark (no moon) where he is at the moment, so he is "flying by instruments," which he is well accustomed to as a former combat pilot.

PS... he did not choose to enter in the dark! In these strong winds without a sea anchor or drogue, he cannot slow down. He is there, when he is there.



This is 12:11 PM Seattle time, which is 0511 in AU, which we see here is still dark. It is winter there.  The meridian lines shown on this map are 2 hr a[art, so he has about 2 hr more of darkness at this time.  

This screen cap is from the free PC program called orbitron, which i am running on a Mac using WINE.  I will post a couple articles about this program in our Starpath nav blog. We use it to predict passing times of Metop-A and Coriolis, the scatterometer satellites.... the daylight terminator is a bonus to us, but crucial to those who want to visually see the satellites cross the sky.

A video note on this announcement:





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