Reference image
Object guide
Uranus is an ice giant with a pale blue color from methane; it rotates on its side, likely due to a giant collision early in its history. Its ring system and moons are icy and highly interesting for interior/formation studies. Uranus is approximately 50,724 km across.
How to observe Uranus
Uranus is best observed near opposition or greatest elongation as appropriate; steady seeing and repeated short observations reveal more than excessive magnification.
Scientific context
Useful scale comparisons are 3.981 Earth diameters, 0.886 g surface gravity, 84.016 Earth years per orbit. These values are rounded from the catalogue measurements shown on this page.
- Radius
- 25,362 km
- Diameter
- 50,724 km
- Mass
- 8.681E+25 kg
- Mean density
- 1.27 g/cm³
- Surface gravity
- 8.69 m/s² (0.886 g)
- Mean temperature
- -195°C
- Orbital period
- 30,687 days (84.016 years)
- Semi-major axis
- 19.2 AU
- Mean sunlight travel time
- 159.68 minutes
3.981 Earth diameters0.886 g surface gravity84.016 Earth years per orbit
Source: NASA Science (checked 2026-08-09). Values are rounded catalogue measurements.
24-hour altitude profile
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Interactive orbit model
Aug 13, 2026, 22:251×
Calculated positions / separate exploration scales