I’ve been totally digging the ISS Detector app from RunaR and wanted to give ’em a shout out. I have it set up to automatically notify me, with 15 minutes notice or so, when the ISS is going to be overhead. It has some VERY cool options whereby it only notifies me when the station will be high enough above the horizon to see (10 degrees max = no thank you) AND only when the weather is cooperating (if it’s rainy, please don’t bother me!). The app has a built-in compass to help you orient yourself, and as per the screen snap below, it’ll tell you where it’s gonna show up, when, how it’s gonna travel across the sky, how long it’ll be visible for, and how high it’ll get.
The ISS is visible with the naked eye. However, if you can scrounge up a pair of binoculars you can make out the outline of its PV wings. The ISS in toto is roughly the size of a football field. Note that the ISS moves fast. In fact, it’s orbiting Earth every 92 minutes at a speed of 17,500 MPH (more than 25X faster than the last jet you were on!). As you look up, it’ll almost certainly be the fastest moving object in the sky.
Net-net, if you’re a space geek, this is a must-have app IMO. Enjoy!