90166

90166 is a numeric designation that appears in several unrelated contexts. In mathematics it is an even natural number that can be factored as 2 × 45083, placing it between 90165 and 90167 on the number line.

In astronomy, 90166 is the designation of a numbered minor planet tracked by the Minor Planet Center. Such designations are assigned to small bodies in the solar system once their orbits are well established; discovery details and orbital data are kept in the MPC catalog. The naming process allows for potential later naming, though not all numbered objects receive a formal name.

Beyond mathematics and astronomy, 90166 may occur as an identifier in other domains, such as postal, commercial, or cataloging systems. The exact meaning depends on the context and country, and no single definition applies universally. In any use, the sequence functions as a label rather than a descriptive attribute, and its interpretation is determined by the organization that assigns it.