[amsat-bb] A pass from the past

Bryan Green bryan at kl7cn.net
Wed Apr 1 21:17:38 UTC 2015

Hello, all!

Long story short:

I have handwritten notes and a recording from a past AO-73 pass.

My notes are dated that the pass was from 05:18Z - 05:31Z on 2015-01-29.

My recording indicates that the start was at 05:19Z on 2015-01-29. (I have the clock on the MP3 device set to UTC).

I have a spreadsheet of every pass I've tracked since the beginning of the year, and I'm going back to update the AOS, Max, and LOS azimuths, since I didn't start recording those until February.

Here's what I did:

Fed the AMSAT TLE file from 2015-01-30 into Orbitron.

It predicts AO-73 AOS at 05:32Z, and LOS at 05:39Z

Got the old-school predict program, fed it the same file, and got exactly the same results.

How can I best simulate an orbit prediction from the past?

I have SatPC32 but I don't understand how to use it to get a pass prediction.

Thanks in advance for the help!

-- bag

Bryan KL7CN/W6

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