Planet

Uranus

Wikipedia ↗

Where is it now

Distance from Sun: 19.441 AU
True anomaly: 251.27°
As of: 29 August 2026

Two-body Kepler propagation — accurate to ~0.1% for major planets over decades, less so for highly-perturbed bodies. Use JPL Horizons for high precision.

Orbital elements

Semi-major axis: 19.189 AU
Eccentricity: 0.0473
Inclination: 0.77°
Orbital period: 84.02 years
Perihelion: 18.286 AU
Aphelion: 20.097 AU
Longitude of ascending node: 74.02°
Argument of periapsis: 97°
Epoch · J2000: J2000

Physical properties

Mean radius: 25,362 km
Equatorial radius: 25,559 km
Polar radius: 24,973 km
Mass: 8.681 × 10²⁵ kg
Density: 1.27 g/cm³
Rotation period: -17.24 hours
Axial tilt: 97.77°
Surface gravity: 8.69 m/s²
Escape velocity: 21.3 km/s

Visual & observation

Geometric albedo: 0.488
Bond albedo: 0.3
Representative colour: #A9D7E3

Discovery & classification

Discovered by: William Herschel
Discovery date: 13 March 1781

Ring system

Ring	Inner radius	Outer radius	Width
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
Zeta Ring	32,000 km	39,600 km	7,600 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
6 Ring	41,837 km	41,837 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
5 Ring	42,234 km	42,234 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
4 Ring	42,570 km	42,570 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Alpha Ring	44,718 km	44,718 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Beta Ring	45,661 km	45,661 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Eta Ring	47,175 km	47,175 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Gamma Ring	47,627 km	47,627 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Delta Ring	48,300 km	48,300 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Lambda Ring	50,023 km	50,023 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Epsilon Ring	51,149 km	51,149 km	0.00 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Nu Ring	66,100 km	69,900 km	3,800 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km
Mu Ring	86,000 km	103,000 km	17,000 km

28 moons


Miranda	236 km	0.0009 AU	33.9 hours
Ariel	579 km	0.0013 AU	2.5 days
Umbriel	585 km	0.0018 AU	4.1 days
Titania	788 km	0.0029 AU	8.7 days
Oberon	761 km	0.0039 AU	13.5 days
Belinda	—	—	—
Bianca	—	—	—
Caliban	—	—	—
Cordelia	—	—	—
Cressida	—	—	—
Cupid	—	—	—
Desdemona	—	—	—
Ferdinand	—	—	—
Francisco	—	—	—
Juliet	—	—	—
Mab	—	—	—
Margaret	—	—	—
Ophelia	—	—	—
Perdita	—	—	—
Portia	—	—	—
Prospero	—	—	—
Puck	—	—	—
Rosalind	—	—	—
S/2023 U 1	—	—	—
Setebos	—	—	—
Stephano	—	—	—
Sycorax	—	—	—
Trinculo	—	—	—

Sources

orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet
orbital elements: NASA Planetary Fact Sheet / JPL keplerian elements
physical properties: NASA Planetary Fact Sheet
visual properties: NASA Planetary Fact Sheet