(190166) 2005 UP156

(190166) 2005 UP156 is a minor planet, also known as an asteroid. It is part of the main asteroid belt located between the orbits of Mars and Jupiter. These celestial objects are remnants from the early solar system's formation and did not coalesce into a planet.

The designation "(190166)" indicates a sequential numbering system assigned to asteroids as their orbits become well-determined and officially recognized by the Minor Planet Center (MPC) of the International Astronomical Union (IAU). The portion "2005 UP156" represents the provisional designation given at the time of its discovery. The "2005" signifies the year of discovery, "UP" is an alphanumeric code indicating the specific half-month of the year in which it was discovered (October 21-31 in this case), and "156" indicates the order of discovery within that half-month.

The physical properties, such as size, shape, composition, and rotation period of (190166) 2005 UP156, are likely not well-established. Determining these characteristics usually requires dedicated observational campaigns using telescopes to collect photometric and spectroscopic data. Without such data, its characteristics remain largely unknown and are inferred based on its orbital parameters and similarities to other asteroids within its orbital region. Further research would be necessary to fully understand this specific minor planet.