At the same time, we are expanding this high-risk area to include a segment on DOD’s polar-orbiting weather satellites because the agency has been slow to replace aging satellites and, as a result, is at risk of a gap in weather satellite data in the early morning orbit.We did not include a segment on DOD weather satellites in our prior high-risk update because the department was not, at that time, facing an imminent satellite data gap.The Joint Space Operations Center issued a notification that the close approach of two non-maneuverable satellites did not result in a collision: “The close approach predicted at UTC on has passed without incident.
“The JSp OC has identified a close approach between two non-maneuverable satellites in a sun-synchronous orbit (approximately 800km altitude) with a time of closest approach at UTC on 7 January 2017,” the warning said.
“The probability of collision has been predicted as high as 44%.” Such warnings are extremely rare as close encounters of this kind do not occur frequently and active satellites typically maneuver out of harms way days or hours in advance to avoid the possibility of a collision.
Without maneuvering capability, the two spacecraft involved in Saturday’s encounter have no way of avoiding the close approach.
Due to errors in orbit determination and external influences on a satellite’s orbit, it can not be predicted with absolute certainty that the satellites will indeed collide.
The United States relies on two complementary types of satellite systems for weather observations and forecasts: (1) polar-orbiting satellites that provide a global perspective every morning and afternoon, and (2) geostationary satellites that maintain a fixed view of the United States.
Both types of systems are critical to weather forecasters, climatologists, and the military, who map and monitor changes in weather, climate, the oceans, and the environment.
A 44% probability is considered very high – almost even odds of a collision taking place.
Satellite operators typically track conjunctions starting at a 1/1000 probability of collision.
Approximately 29 minutes after liftoff, the Via Sat-2 mission was underway with the satellite separating from the launch vehicle.
First signals from the satellite were acquired shortly thereafter through a ground station at Hassan, India.
my speeds are rarely over 4 mbps, usually at around 100kbps an the plan runs out after a matter of a week or so of barely using it.