Uranus

Interactive globe of the first ice giant. Uranus has no imaged global map: Voyager 2 in January 1986 saw an almost featureless disk, so the base here is a synthesized zonal-brightness profile — latitude structure from Voyager 2 and Hubble photometry painted at the planet's measured colour, with no invented storms or detail. What is real is rendered exactly: the 97.77° axial tilt that rolls the planet onto its side, the retrograde 17.24-hour rotation, the oblateness, and the thirteen narrow rings drawn at their true radii with the ε ring dominant. Ring and atmospheric-band features are selectable, and the research feed tracks a literature now dominated by the Uranus Orbiter & Probe, the decadal survey's top-priority flagship.

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Atmosphere & Rings

Thirteen narrow rings drawn at true radii (41,837–51,149 km); opacities follow published normal optical depths, with the ε ring dominant. The base map is a synthesized zonal profile — Uranus has no imaged global mosaic — so all longitudinal detail is deliberately absent.

Named Features

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Base: synthesized zonal-brightness profile at Uranus's measured disk colour — latitude structure from Voyager 2 ISS and HST photometry; Uranus has no imaged global mosaic, and no longitudinal detail is invented. Rings: nine main rings plus ζ at true radii (Elliot et al. occultations; Voyager 2), opacities following published normal optical depths. Rotation: 17.24 h, retrograde, about an axis tilted 97.77°. Equatorial radius 25,559 km, polar radius 24,973 km (rendered oblate).
Live context · Named bodies

Position among named bodies

Uranus is marked in cyan on a live map of the uniquely named bodies of the solar system — planets, dwarf planets, and approximately 26,000 named minor planets and comets out to the Kuiper belt — together with the interstellar objects and the escaping spacecraft. Positions are evaluated at load time and each body links to its source record.

Methodology

Construction

The sphere is rendered in Three.js at Uranus's equatorial radius, 25,559 km, scaled to scene units, with the measured oblateness applied. The axis is tilted 97.77° in the scene, so the planet spins nearly pole-on to its orbit — the configuration responsible for its 42-year polar seasons — and the idle rotation is retrograde with the measured 17.24-hour period.

The base map is synthesized, and says so

Uranus is the one world in this catalog with no imaged global map: Voyager 2's single flyby (24 January 1986) recorded an almost featureless disk, and no mission has returned. The Worlds admission rule is an evidence-led globe, so the base texture is built to carry exactly the evidence that exists and nothing more: a one-dimensional zonal-brightness profile — the bright south-polar collar near −45°, the darker low southern latitudes, and the post-equinox north-polar brightening tracked by Hubble — painted at the planet's measured mean colour. It is uniform in longitude by construction. No storms, bands or texture are invented. When the Uranus Orbiter & Probe returns real cartography, this layer is replaced.

Rings

The rings are a single annulus mesh with UVs remapped radially, textured from the ring table rather than an image: each of the nine main rings (6, 5, 4, α, β, η, γ, δ, ε) plus ζ is drawn at its occultation-measured radius, with opacity scaled to published normal optical depths. The ε ring — 51,149 km, eccentric, 20–96 km wide — dominates, as it does in every observation since the 1977 occultation discovery. Ring features are placed in the ring plane at true radii; atmospheric features are placed by latitude with nominal longitudes, since no longitude system on Uranus is observable.

Research feed

The research panel queries body_server.py at /api/uranus/latest; absent a server, the seed research.json and ADS search links are used. The engine, server and data schema are shared with the other Worlds globes.

References