What de­ter­mines the speed of an ob­ject or­bit­ing our planet?

Focus-Science and Technology - - Q & A - HAFIZ MALGHANI, AG

OB­JECTS CAP­TURED BY the Earth’s grav­i­ta­tion typ­i­cally have el­lip­ti­cal or­bits. The mean or­bital speed of the ob­ject de­pends only on the Earth’s mass and the semi-ma­jor axis (half the long­est di­am­e­ter) of the ob­ject’s or­bit. How­ever, the or­bital speed changes de­pend­ing on where in the or­bit the ob­ject is. It will be great­est when clos­est to Earth and least when fur­thest from Earth.

Satel­lites will or­bit fastest when they’re close to the Earth

Newspapers in English

Newspapers from UK

© PressReader. All rights reserved.