| 1. | It continued to return interplanetary data from heliocentric orbit after the flyby.
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| 2. | The panels continued on lunar flyby trajectories into heliocentric orbit.
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| 3. | Centaur ( second ) stages are also in heliocentric orbits.
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| 4. | The defunct Venera 1 passed within of Venus before entering a heliocentric orbit.
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| 5. | For example, it could collect solar wind data in a heliocentric orbit.
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| 6. | It is believed to have passed within 100, 000 km of Venus and remains in heliocentric orbit.
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| 7. | It will continue in its heliocentric orbit, and will return to the vicinity of Earth in 2031.
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| 8. | Ranger 3 missed the Moon by approximately 36, 800 km on 28 January and is now in a heliocentric orbit.
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| 9. | ISEE-1 and ISEE-2 remained near the Earth, while ISEE-3 went into a heliocentric orbit.
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| 10. | On May 19, 1961, Venera 1 passed within 100, 000 km of Venus and entered a heliocentric orbit.
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