Two satellites $A$ and $B$ move round the earth in the same orbit. The mass of $A$ is twice the mass of $B$. The quantity which is same for the two satellites will be

The formula to calculate the speed of a satellite while revolving around the Earth is given by

$v=\sqrt{\frac{G{M}_e}{R}} ...\left(1\right)$

where, $v$ is the speed, $G$ is the Gravitational constant, $M_e$ is the mass of the Earth, $R$ is the radius of the orbit.

As can be seen from the equation, speed is independent of mass of satellite.

Hence, the speed of the satellites will be the same.