Perigee


Perigee is the point in the orbit of a celestial body (such as a planet, moon, or satellite) that is nearest to the center of the body it orbits. In the context of space and astronautical engineering, perigee is an important concept as it determines the closest distance a spacecraft or satellite can be to the Earth. This distance affects the velocity and trajectory of the spacecraft, and can be used to optimize fuel consumption and mission objectives. For example, a spacecraft in a low Earth orbit with a perigee of 200 km will experience more atmospheric drag than a spacecraft in a higher orbit with a perigee of 500 km. Therefore, perigee is an important parameter to consider when designing and planning space missions.


Your Previous Searches
Random Picks

  • Viscoelastic Materials: Viscoelastic materials are materials that exhibit both viscous and elastic properties when undergoing deformation. These materials have a time-dependent response to applied stress or strain, meaning that their mechanical behavior changes ov ... Read More >>
  • Inertial Navigation System: Inertial Navigation System (INS) is a navigation aid that uses a computer, motion sensors (accelerometers), rotation sensors (gyroscopes) and occasionally magnetic sensors (magnetometers) to continuously calculate by dead reckoning the posi ... Read More >>
  • Current Drive Techniques: Current drive techniques refer to the methods used to generate and maintain plasma current in fusion devices. In a fusion reactor, plasma current is necessary to confine and heat the plasma to the temperatures required for fusion reactions ... Read More >>
Top News

Orionids meteor shower is this weekend: Where and when to watch its peak...

Orionids meteor shower is this weekend: Where and when to watch its peakgo.com...

News Source: ABC News on 2024-10-18

Acting or hosting, Travis Kelce wants to continue to pursue a showbiz career. Bu...

Travis Kelce is the host of “Are You Smarter Than a Celebrity?”...

News Source: ABC News on 2024-10-09

Now is a great time to see Saturn in all its ringed glory...

My first sight of Saturn through a telescope inspired my love of space. Dig out your telescopes or visit your local astronomy club, and you may be lucky enough to spot our sixth planet's stunning thic...

News Source: New Scientist on 2024-10-09

Was Bruce Willis right? Could a nuclear blast save us from killer asteroid?...

Scientists simulated a nuclear explosion using x-ray pulses to push an asteroid-like rock away in space-like conditions....

News Source: Al Jazeera English on 2024-10-04

China's answer to SpaceX's Starlink is also threatening astronomy...

The first 18 satellites of a planned Chinese mega constellation are brighter than all but 500 stars in the sky, raising fears of a huge impact on astronomy...

News Source: New Scientist on 2024-10-03