Explorer 7 was launched on October 13, 1959, with an apogee altitude above the Earth’s sur...

Explorer 7 was launched on October 13, 1959, with an apogee altitude above the Earth’s surface of 1073 km and a perigee altitude of 573 km above the Earth’s surface. Its orbital period was 101.4 min.

Figure P5.101

Determine the eccentricity of the Explorer 7’s orbit as well as its speeds at perigee and apogee.