152830 Dinkinesh size and scale context

Dinkinesh is a small stony main-belt asteroid and the first object visited by NASA’s Lucy spacecraft. The 2023 flyby revealed its moon Selam, the first known contact-binary satellite of an asteroid. Read its scale context, comparisons, and journey links on the canonical object page.

101955 BennuCarbonaceous near-Earth asteroid·565 m

65803 DidymosS-type binary near-Earth asteroid·851 m

152830 DinkineshSq-type binary main-belt asteroid·910 m

162173 RyuguCarbonaceous near-Earth asteroid·1 km

Scroll up for smaller

Scroll down for larger

Between the smallest and the largest, perspective is everything.

About

Scale of Space is a scroll-based journey through the universe, placing objects on a single logarithmic scale so you can compare size across an unbroken range.

Guides turn parts of that scale into curated essays, while focused views let you explore the same range through specific groups of objects.

Editorial

Solar System Planets From Electron to Atoms Stars To Scale Birth And Death Of Stars Black Holes To Scale

Views

Planets of the Solar System Stars of the Universe Black holes Subatomic scale

Open Scale of Space Browse all comparisons

Between the smallest and the largest, perspective is everything.

About

Scale of Space is a scroll-based journey through the universe, placing objects on a single logarithmic scale so you can compare size across an unbroken range.

Guides turn parts of that scale into curated essays, while focused views let you explore the same range through specific groups of objects.

Editorial

Solar System Planets From Electron to Atoms Stars To Scale Birth And Death Of Stars Black Holes To Scale

Views

Planets of the Solar System Stars of the Universe Black holes Subatomic scale

Open Scale of Space Browse all comparisons

Asteroids

65803 Didymos

Didymos is the larger member of a binary near-Earth asteroid system and the anchor of NASA’s DART planetary-defense test. In 2022 the spacecraft struck its small moon Dimorphos to change its orbit.

Scale fact851 mmaximum extent

Object class: S-type binary near-Earth asteroid
Composition: Silicate (stony) rock
Mass: ~520 million tonnes

Asteroids

152830 Dinkinesh

Scale fact910 mmaximum extent

Object class: Sq-type binary main-belt asteroid
Composition: Silicate rock and metal
Mass: ~467 million tonnes

Asteroids

162173 Ryugu

Ryugu is a dark carbon-rich asteroid explored by JAXA’s Hayabusa2 mission. Its pristine returned samples contain amino acids and other organic molecules free from Earth contamination, giving researchers a cleaner look at prebiotic chemistry in the early Solar System.

Scale fact1 kmmaximum extent

Object class: Carbonaceous near-Earth asteroid
Mass: ~450 million tonnes
Estimated age: ~4.5 billion years
Composition: Carbon-rich rock and boulders