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Library for calculating satellites positions and predicting overpasses.

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Some applications (like ours) need to use the state vector (ro and vo). I moved ro and vo to the public section in sgp4pred.h. I'd love to push this change...

Hello @Hopperpop , Thank you again for sharing this library. It is a really nice piece of work! Could you please add this library to the Arduino Library Manager -...

Seems like the result of invjday and findsat is off. Compared to N2YO and gPredict, the nearest passes are off by 1-5 minutes, the current calculated direction of the satellite...

When running this program using the default sample code and comparing it with Orbitoron, the calculations were incorrect unless the timezone was set to UTC 0. Steps taken: - Left...