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No Vulcanoids have ever been found, despite ground-based searches and more recent searches by NASA using high-altitude F-18 aircraft. Such searches are extremely difficult due to the glare of the Sun. If Vulcanoids exist, it is believed they must be no more than 60 km in diameter, since previous searches would have found anything larger.
Nevertheless, it is believed Vulcanoids could exist because the region of space being searched is gravitationally stable, and all similarly stable regions of the solar system have been found to contain objects. Also, the heavily cratered surface of Mercury means a population of Vulcanoids probably existed in the very early days of the solar system.
Future searches for Vulcanoids may use whichever spacecraft wins the X-Prize competition.
Vulcanoid asteroids, if they exist, would be a special subclass of Apohele asteroids.
| The Minor Planets |
| Vulcanoids | Main belt | Groups and Families | Near-Earth objects | Jupiter Trojans |
| Centaurs | Trans-Neptunians | Damocloids | Comets | Kuiper Belt | Oort Cloud |
| (For other objects and regions, see: Binary asteroids, Asteroid moons and the Solar system) |
| (For a complete listing, see: List of asteroids) |