5.12 A sea-level tracking station at whose local sidereal time is 40" and latitude is 35" makes the following observations of a space object: Azimuth: 36.0" Azimuth rate: 0.5909/s Elevation: 36.60 Elevation rate: -0.2639/s Range: 988 km Range rate: 4.86 km/s What is the state vector of the object? [ Partial ans.: r = 7003.3 km, v = 10.922 km/s}