However, such selection of "geocentric" or "heliocentric" frames is merely a matter of computation. The panels continued on lunar flyby trajectories into heliocentric orbit. Nicolaus Copernicus attributed the heliocentric theory to Aristarchus. It was another generation before a community of practicing astronomers appeared who accepted heliocentric cosmology. Urdi develops the Urdi lemma, which is later used in the Copernican heliocentric model. As well as proving the heliocentric model, Newton also developed the theory of gravitation. Seleucus' arguments for a heliocentric cosmology were probably related to the phenomenon of tides. However, the orbital insertion maneuver failed and the spacecraft was left in heliocentric orbit. Copernicus' "Commentariolus" summarized his heliocentric theory. The spacecraft is now derelict in an exterior heliocentric orbit. Mariner 2 remains in heliocentric orbit. It is believed to have passed within of Venus and remains in heliocentric orbit. Below is a list of artificial objects in heliocentric orbit. The capture of an asteroid from a heliocentric orbit is not always permanent. The capture of an asteroid from a heliocentric orbit isn't always permanent.