The letters represent compass directions - N is north, WNW is west by northwest, and so on.ĭisappears represents where in the night sky the International Space Station will leave your field of view.“If the weather holds out the way it looks like it’s going to, I’d say there’s a really good chance of seeing it,” said Burress. This value, like maximum height, also is measured in degrees from the horizon.
If you hold your fist at arm's length and place your fist resting on the horizon, the top will be about 10 degrees.Īppears is the location in the sky where the station will be visible first. The horizon is at zero degrees, and directly overhead is ninety degrees. It represents the height of the space station from the horizon in the night sky. Max Height is measured in degrees (also known as elevation).
Visible is the maximum time period the space station is visible before crossing back below the horizon. This is the optimum viewing period as the sun reflects off the space station and contrasts against the darker sky. All sightings will occur within a few hours before or after sunrise or sunset. Time is when the sighting opportunity will begin in your local time zone.
What does all this sighting information mean? The following ISS sightings are possible from Monday through Tuesday Date
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