gov/content/jpss-1-press) press report , "JPSS-1, which will be known as NOAA-20 when it reaches polar orbit
, will join the Suomi National Polar-orbiting Partnership (Suomi NPP), a joint NOAA-NASA weather satellite, giving the U.
JPSS actually includes five satellites that will be placed in polar orbits
Uniquely, because of the polar orbit
, OneWeb's terminals can view the satellites almost directly overhead at any time, providing clear line of sight access.
Owing to the rotation of the source of the field, Kepler's 3rd Law for the polar orbit
is not the same as that for the equatorial orbit, so that stable photon orbits are also different in the polar and equatorial orbits, showing that in the rotating configurations spacetime is no longer isotropic.
The SRE will be put into a polar orbit
at an altitude of 650 km above the earth.
into a low-earth polar orbit
when launched from Vandenberg AFB, Calif.
Alaska - not industry-guru Florida - is particularly prime to provide polar launch service, as launches into low polar orbit
are more efficient at high latitudes.
But the Global Surveyor has taken a longer route to Mars so it can get into a polar orbit
to begin a two-year mapping mission.
They were to go into polar orbit
for a two-year study of the Earth's magnetic shield.
Even more unique is that OneWeb is specifically designed with a polar orbit
to ensure coverage of 100 percent of the United States, including Alaska which has historically, because of its high latitude, had poor coverage from the satellite industry.
The solar-powered spacecraft will perform a Jupiter orbit insertion maneuver--a 35-minute burn of its main engine--which will slow Juno by about 1,200 mph (542 meters per second) so it can be captured into the gas giant's polar orbit
March 18: After three brief flybys in 2008 and 2009, NASA's Messenger spacecraft will brake into a permanent, looping polar orbit