Click a name to jump to it and read its published diameter, distance from the Sun, and orbital period - drag to orbit and scroll or pinch to zoom the five worlds lined up left to right in order of real distance.
Sphere size follows each body's published diameter and left-to-right order follows real distance from the Sun - Ceres sits alone in the main Asteroid Belt while the other four orbit far beyond Neptune in the Kuiper Belt or scattered disc.
Drag to orbit and scroll or pinch to zoom. Click a name to highlight that world and read its row in the comparison table.
Related size and region explorers: Planet Size Comparison 3D Explorer (the Sun and eight IAU planets, not dwarf planets), and Kuiper Belt and Oort Cloud 3D Explorer (the region these four dwarf planets orbit within, shown as a structure rather than as individual bodies). Walk the step-by-step guide.
Dwarf Planet Size Comparison 3D Explorer
This explorer lines up the five IAU-recognized dwarf planets - Ceres, Pluto, Haumea, Makemake, and Eris - as scale-accurate spheres in real distance order, so the size difference a chart of numbers hides becomes visible at a glance: Eris and Pluto are close in size to each other, while Ceres is barely a fifth as wide as either.
Clicking a name highlights that world, jumps the camera to it, and opens its row in the comparison table below. This page compares the five dwarf planets to each other - for the eight IAU planets and the Sun on the same kind of scale-accurate lineup see Planet Size Comparison 3D Explorer, and for the Kuiper Belt region several of these bodies orbit within, shown as a structure rather than individual worlds, see Kuiper Belt and Oort Cloud 3D Explorer.
- All five IAU-recognized dwarf planets rendered at once - Ceres, Pluto, Haumea, Makemake, Eris
- Sphere size is proportional to each body's published diameter
- Left-to-right order follows real distance from the Sun, not just size
- Haumea renders slightly flattened because its fast ~3.9-hour rotation genuinely stretches it into an elongated shape
- Comparison table lists diameter, distance, orbital period, and region for each body
- Runs in-browser with three.js - no account, no upload
Ceres stands apart from the other four in more than distance: it is the only dwarf planet in the inner solar system, orbiting the main Asteroid Belt between Mars and Jupiter, while Pluto, Haumea, Makemake, and Eris all orbit far beyond Neptune. Ceres was also the first of the five to be found, in 1801, more than two centuries before the 2006 vote that created the "dwarf planet" category in the first place.
| Dwarf planet | Diameter | Distance from Sun | Orbital period | Region |
|---|---|---|---|---|
| Ceres | ~940 km | 2.77 AU | 4.6 years | Main Asteroid Belt |
| Pluto | 2,377 km | 39.5 AU | 248 years | Kuiper Belt |
| Haumea | ~1,600 km (elongated) | 43.1 AU | 284 years | Kuiper Belt |
| Makemake | ~1,430 km | 45.8 AU | 305 years | Kuiper Belt |
| Eris | 2,326 km | 67.8 AU | 561 years | Scattered disc |
This is an educational size comparison, not an orbital simulation - the row spacing between spheres is compressed for readability and is not linear with real distance (Eris orbits roughly 25 times farther from the Sun than Ceres does). Haumea's flattened shape is a genuine physical feature, not a rendering error: its rapid spin - the fastest confirmed for any body this large - pulls its own surface outward at the equator.
Renders on-device with WebGL - loads once (about 0.7 MB), cached by the browser, no data sent to a server.
The IAU currently recognizes exactly five dwarf planets. Several other bodies, including Sedna, Quaoar, Gonggong, and Orcus, are large enough that many astronomers consider them likely dwarf planets too, but they have not yet been formally classified - a reminder that the boundary between "dwarf planet" and "large Kuiper Belt object" is still an active area of debate, not a settled list.
For the walkthrough, see the step-by-step guide. The Space 3D collection also includes Planet Size Comparison 3D Explorer and Kuiper Belt and Oort Cloud 3D Explorer.
Frequently Asked Questions
What does the Dwarf Planet Size Comparison 3D Explorer show?
All five IAU-recognized dwarf planets - Ceres, Pluto, Haumea, Makemake, and Eris - as scale-accurate spheres lined up in real distance order from the Sun. Click a name to highlight one and read its published figures.
How is this different from Planet Size Comparison?
Planet Size Comparison lines up the Sun and the eight IAU planets. This page compares only the five officially recognized dwarf planets, which are much smaller and, except for Ceres, orbit far beyond Neptune.
Why is Ceres so much smaller and closer than the other four?
Ceres orbits the main Asteroid Belt between Mars and Jupiter at 2.77 AU, while Pluto, Haumea, Makemake, and Eris all orbit the Kuiper Belt or scattered disc beyond Neptune, 39 to 68 AU out. Ceres is also the smallest of the five at about 940 km across.
Is Haumea really not round?
Yes. Haumea spins once every roughly 3.9 hours - the fastest confirmed rotation for a body this large - which stretches it into a genuinely elongated shape. The scene renders it flattened for that reason, not as a rendering error.
Are there more than five dwarf planets?
The IAU currently recognizes exactly five. Several other bodies - Sedna, Quaoar, Gonggong, and Orcus among them - are large enough that many astronomers consider them likely dwarf planets too, but none has been formally classified yet.
Why did Pluto stop being called a planet?
In 2006 the IAU defined "planet" to require clearing its orbital neighborhood of other debris. Pluto shares the Kuiper Belt with many similar-sized objects, so it was reclassified as a dwarf planet rather than the ninth planet.
Is the spacing between the spheres to real scale?
No, and the panel says so. Sphere size follows real diameters, but the gaps are compressed for readability - Eris actually orbits roughly 25 times farther from the Sun than Ceres does, far more than the on-screen spacing shows.