List Of Asteroids Asteroids List
This is a list of numbered minor planets, nearly all of them , in sequential order. As of September , and many more not yet numbered.
Most asteroids are ordinary and not particularly noteworthy. For a smaller list of notable asteroids, see .
List of asteroids
The list is too long to fit on one page, see these subpages:
Numbering and naming conventions
After discovery, asteroids generally receive a "), in that order.
In modern times, an asteroid receives a sequential number only after its orbit is precisely known. Asteroids whose orbits are not (yet) precisely known are known by their provisional designation. This rule was not necessarily followed in earlier times, and some asteroids received a number but were subsequently "lost". All of these have now been recovered; the last "lost" numbered asteroid was .
For the reasons mentioned above, the sequence of numbers only approximately matches the timeline of discovery. In extreme cases, such as "lost" asteroids, there may be a considerable mismatch: for instance the high-numbered . Only after it was recovered could its orbit be established and a number assigned. Before this, it was simply known as 1937 UB (its provisional designation).
Only after a number is assigned is the asteroid eligible to receive a name. (For many years, Hermes was a rare exception, an unnumbered asteroid with a name.) Usually the discoverer has up to 10 years to pick a name; some asteroids remain unnamed. Especially towards the end of the , the pace of discoveries has increased so much that it seems likely that the vast majority of "run of the mill" discoveries from now on will never receive names.
In rare cases, a very unusual object may receive an unofficial name before it is numbered. A recent example is .
See also
External links
Books
Dictionary of Minor Planet Names, 5th ed.: Prepared on Behalf of Commission 20 Under the Auspices of the International Astronomical Union,
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