The first midcourse correction was never implemented, and Ranger 5 passed the Moon at a range of 724 kilometers on 21 October and entered heliocentric orbit.
22.
A spacecraft launched from Earth with this velocity would travel some distance away from it, but follow it around the Sun in the same heliocentric orbit.
23.
At the end of its mission " Planck " was put into a heliocentric orbit and passivated to prevent it from endangering any future missions.
24.
The probe was placed in a heliocentric orbit of 192 days with a perigee 46.5 million kilometres ( 0.31 AU ) from the sun.
25.
Intended originally as a Venus probe, technical delays caused it to be launched after the 1959 Venus window had closed so that it was instead sent into heliocentric orbit.
26.
*1961 Venera 1, first planetary probe launched to Venus by the Soviet Union, passed within 100, 000 km of Venus and entered a heliocentric orbit.
27.
During this relatively short period of time, Neptune's resonances would be " sweeping " the space, trapping objects on initially varying heliocentric orbits into resonance.
28.
The sister probe, Venera 1, successfully launched and was injected into a heliocentric orbit toward Venus one week later, although telemetry on the mission failed a week into flight.
29.
Following a coast phase, the upper stage was to have ignited around sixty-one minutes and thirty seconds after launch, in order to place the spacecraft into heliocentric orbit.
30.
Due to a malfunction, the lander failed to perform a manoeuvre necessary to enter the Martian atmosphere, missing the planet and remaining in heliocentric orbit along with the coast stage.
