171228

171228 is a six-digit numeric identifier that can be encountered in several independent contexts. It most commonly appears as a date in year–month–day notation, but it can also serve as a catalog, part, or file number in various databases and products.

Interpreting 171228 as a date yields December 28, 2017. In ISO 8601 form, the same day is written as 2017-12-28.

In astronomy, minor planets are assigned sequential numbers once their orbits are confirmed. If 171228 appears in this field, it would denote the minor planet bearing the official designation 171228 in the catalog maintained by the Minor Planet Center.

It may also function as a model number, batch identifier, or regional code in commerce or logistics. Because numeric identifiers like 171228 have many possible meanings, the exact reference depends on the accompanying context.

Overall, 171228 is not a single, fixed meaning but a numeric token that can designate a date, a celestial object, or a product or data identifier depending on usage.