What is the approximate orbital period of Hubble in minutes?

The approximate orbital period of Hubble is 95 minutes. In low Earth orbit, the telescope circles Earth roughly 15 times per day at about 27,000 kilometers per hour.

Hubble was launched aboard the space shuttle Discovery in April 1990 and deployed several hundred kilometers above Earth. Its orbit is not perfectly fixed: atmospheric drag gradually lowers the spacecraft, while servicing missions historically raised its orbit. Those changes make the exact period vary slightly, but 95 minutes is the standard rounded figure used for the mission.

The short orbit means Hubble repeatedly passes through daylight and darkness. It spends about 36 minutes of each orbit in Earth’s shadow, relying then on energy stored in its nickel-hydrogen batteries. A common mix-up is confusing its orbital period with its pointing speed: Hubble takes about 14 minutes to rotate 90 degrees toward a new target.