Largest Asteroids in the Solar System

Source:  List of exceptional asteroids

Largest Asteroids in the Solar System

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Key Findings

🏆
Ceres leads in Mean Diameter (km) with 939.40.
📊
Average Mean Diameter (km): 415  ·  median: 326.
↔️
Gap: Ceres is 3.7× larger than Juno.

About This Dataset

Largest Asteroids in the Solar System
This chart ranks the largest asteroids in the Solar System by mean diameter, in kilometres. Ceres, so large it is also classified as a dwarf planet, dwarfs all the others in the asteroid belt.
Analysis

Ceres, at 939 km across, is by far the largest asteroid, so massive that it is also classified as a dwarf planet and holds roughly a third of the entire asteroid belt's mass. Vesta (525 km) and Pallas (511 km) form a clear second tier, followed by Hygiea (433 km), which some astronomers argue may also qualify as a dwarf planet. After the top four the sizes decline gradually through Interamnia, Europa, Davida and Sylvia down to Juno (254 km). The steep drop from Ceres to the rest shows how top-heavy the asteroid belt is: a handful of large bodies contain most of its material, while the millions of remaining asteroids are mostly small, irregular rocks. Remarkably, all the asteroids combined would still not equal the mass of Earth's Moon.

Data Insights

Numbers, trends & sources behind this chart

Admin
⬡
Data Points
10
10 categories  ·  1 year
↑
Top Value
939.40
Ceres
Mean Diameter (km) · All Time
◈
Metrics
1
Mean Diameter (km)
◷
Period
All Time
Single year snapshot

Methodology & source

Data source
List of exceptional asteroids
Coverage
10 entities · 10 observations
Measure
Mean Diameter (km)
Last updated
16 September 2026
Compiled by
The ANYSTAT team, from the source above
How the figures are calculated
  • Values are shown as reported by the source. Nothing is rescaled, rebased or converted — the only changes are thousand separators and decimals shown to two places.
  • Entities are ranked highest-first on their value.

An article using this data

189 Asteroids Passed Closer Than the Moon in 2025. The Nearest Was Less Than a Metre Across.
NASA's close-approach data lists 189 asteroids that came within one lunar distance of Earth in 2025. The closest passed about 230 km above the surface. What the...

Rankings & Full Data

10 records · Mean Diameter (km) · ranked by All Time

✓ 10 sourced
# Category All Time Source
🥇 Ceres 939.40
🥈 Vesta 525.40
🥉 Pallas 511
4 Hygiea 433
5 Interamnia 332
6 Europa 319
7 Davida 298
8 Sylvia 271
9 Eunomia 270
10 Juno 254

Data Sources & References

All external sources cited in this dataset

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