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Tuesday, July 11, 2023

Another ISS overflight tonight

Seven minute overflight starts at 9:46 PM
By Will Collette

The International Space Station (ISS) will be flying over Charlestown tonight in a pass that will last seven minutes and will go practically from one horizon to the other.

For the first time in a while, the forecast is for a clear sky. Between our monsoons and Canadian smoke, ISS overpasses haven't been worth reporting since the chances of seeing through that mess have been close to zero.

Starting at 9:46 PM, the ISS will suddenly appear in the sky at 10 degrees above the horizon in the southwest. It will rise to 67 degrees at maximum height, about two-thirds up the sky from the horizon.

Time: Tue Jul 11 9:46 PM, Visible: 7 min, Max Height: 67°, Appears: 10° above SW, Disappears: 10° above ENE 

It will end its journey by disappearing at 10 degrees above the horizon in the east northeast. I always find it to be beautifully serene as it makes its silent pass.

Given the astrophysics, seven minutes is pretty much the longest possible time for a pass over Charlestown.

The weather forecast for today is clear all day and night. Ideal viewing weather.

Here are the overflight details from NASA:

Time: Tue Jul 11 9:46 PM, Visible: 7 min, Max Height: 67°, Appears: 10° above SW, Disappears: 10° above ENE.