Bennu asteroid
Bennu is a near-Earth asteroid with a rubble-pile structure and a roughly top-shaped body.
Also known as: 101955 Bennu, Bennu
How big is it?
492 m · representative equatorial diameter
Representative equatorial diameter · approximate
Typical recorded range: 480 m to 510 m.
A little perspective
Bennu asteroid vs Brooklyn Bridge: length comparison
The equatorial diameter of the asteroid Bennu is about 1.01 times the main span between tower centres of the Brooklyn Bridge.
Bennu is a near-Earth asteroid with a rubble-pile structure and a roughly top-shaped body.
The Brooklyn Bridge is a suspension bridge spanning the East River between Manhattan and Brooklyn in New York City.
Both rulers start at the same zero and share one linear scale. Artwork keeps its original proportions.
Measurements, assumptions & sources +
Bennu asteroid
Representative equatorial diameter: 492 m; approximate; range 480 m–510 m.
Near-Earth asteroid Bennu is about 500 m across and has a rubble-pile, top-shaped body. The 492 m and 7.3 × 10¹⁰ kg values are rounded comparison anchors.
The marked representative equatorial diameter is calibrated. Unmeasured illustration details are representative.
Brooklyn Bridge
Main span between tower centres: 486.3 m; specified.
The selected measurement is the approximately 486.3 m suspended main span between the two stone towers, not the bridge’s full approach-to-approach length.
NYC DOT — Brooklyn Bridge facts
The marked main span between tower centres is calibrated. Unmeasured illustration details are representative.
Use the visual comparison to explore its scale, then check the measurements and sources.
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Why this measurement?
Why we use 492 m
We compare the equatorial diameter of the asteroid Bennu. This is an estimate; check the notes for its rounding and uncertainty. The recorded range is 480 m to 510 m.
Near-Earth asteroid Bennu is about 500 m across and has a rubble-pile, top-shaped body. The 492 m and 7.3 × 10¹⁰ kg values are rounded comparison anchors.
The marked horizontal span follows the measured feature, not the edges of the image. How calibrated comparisons work →
Recorded properties
Dimensions and measurements
| Property | Selected value | Recorded range | Basis |
|---|---|---|---|
| 492 m | 480 m to 510 m | approximate | |
| 73,000,000 t | 70,000,000 t to 75,000,000 t | approximate |
Around this scale
Explore nearby values.
Compare examples with lower, similar and higher values. Each card names the measurement being compared.
Nearest lower valueBuildings and structuresBrooklyn Bridge486.3 mMain span between tower centresThe Brooklyn Bridge is a suspension bridge spanning the East River between Manhattan and Brooklyn in New York City.
Around the same scaleBuildings and structuresSydney Harbour Bridge503 mMain arch spanSydney Harbour Bridge is a steel arch bridge in Sydney, Australia, connecting the city centre with the North Shore.
Nearest higher valuePlaces and natural featuresPowell River500 mApproximate main-channel lengthThe Powell River is a short river in British Columbia flowing from Powell Lake to the Salish Sea.Sources and method
Want to check the number?
The source records and measurement method remain available for inspection.
- NASA — Asteroid BennuBennu is roughly one-third of a mile wide; detailed mission solutions give a near-500 m rubble-pile body.
There’s always another scale
Follow your curiosity.
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