| Proper Name | Uni | | Minor Planet Designation | 55637 Uni | | Provisional Designation | 2002 UX25 | | Orbital Period | 276 years, 348 days | | Distance from the Sun | Semi-Major Axis: 6,428,853,000 km (42.97 AU)
Perihelion: 5,487,651,000 km (36.68 AU)
Aphelion: 7,370,055,000 km (49.27 AU)
| | Eccentricity | 0.1464 | | Rotation Period | 14 hours, 23 minutes | | Diameter | c. 665 km | | Moon | Tinia | | Parent star | The Sun, yellow dwarf | | Other planets in this system | Mercury, terrestrial planet
Venus, terrestrial planet
Earth, terrestrial planet
Mars, terrestrial planet
Jupiter, gas giant
Saturn, gas giant
Uranus, ice giant
Neptune, ice giant
Numerous dwarf planets, asteroids and other bodies
| | Notes | A cubewano or classical Kuiper Belt object, Uni approaches seven hundred kilometres in diameter, and is likely to meet the parameters for classification as a dwarf planet. It has a single known satellite, Tinia, which measures some two hundred kilometres in diameter (or a little under a third that of Uni itself). |
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