The International Space Station will make several bright passes over Hawaii this week, but will cater most to early risers.
At 6:14 tonight, the space station will rise in the southwest and arc to the right, passing through the constellations Aquila the Eagle and Cygnus the Swan. That will put it very near the stars Altair in Aquila and Deneb in Cygnus, two points of the Summer Triangle, still visible in Hawaii skies.
The third point, the bright star Vega, will be above the northwest horizon as the space station passes over it between 6:17 and 6:18 p.m.
The space station will then blink out of sight about 6:20 p.m. below the constellation Cassiopeia, which looks like a squashed M.
On Tuesday, the station will rise in the north at about 4:57 a.m. and pass to the right through the pan of the Big Dipper.
Between 4:59 and 5 a.m., it will pass in quick succession under Jupiter, Mars and Venus, the last very near the bright star Spica in the constellation Virgo. A waning gibbous moon will be nearly straight up, forming almost a straight line with the planets.
The brightest pass this week, weather permitting, will be Thursday. It will rise in the west at 4:49 a.m. and move to the left, passing over Orion the Hunter and his faithful companion, Canis Major, which has the brightest star in the sky, Sirius.
Sirius shines at a magnitude of minus 1.46, while the space station will be far brighter at minus 3.
The space station will blink out of sight as it enters the Earth’s shadow at
4:52 a.m., near the base of the Southern Cross, just above the south-southeastern horizon.
The moon, Jupiter, Mars and Venus will also be visible in the same array as Tuesday’s.
The space station is
249 miles up and traveling at 17,150 mph. It is visible before dawn and after dusk when it reflects sunlight.
Aboard are two Americans, Scott Kelly and Dr. Kjell Lindgren; three Russians, Mikhail Kornienko, Sergey Volkov and Oleg Kononenko; and Japanese astronaut Kimiya Yui.
On Friday and Saturday, the evening skies above Hawaii will be lit up by brilliant sunlight reflecting off communications satellites.
At 6:08 p.m., Friday, the Iridium 58 satellite will flash above the south-southwestern horizon. At 6:02 p.m., Saturday, the Iridium 55 satellite will flare in almost the same spot.