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 across
Representative equatorial diameter · approximate
Typical recorded range: 480 m to 510 m.
A little perspective
About the same scale as Brooklyn Bridge.
Brooklyn Bridge: The Brooklyn Bridge is a suspension bridge spanning the East River between Manhattan and Brooklyn in New York City.
Measurements, assumptions & sources +
Bennu asteroid
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
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.
Change your perspective
Put it next to…
Choose a suggestion to redraw the comparison, or open its page to learn what it is.
Why this measurement?
Why we use 492 m
For comparison, this page uses representative equatorial diameter. This is labelled approximate; the central value is useful for comparison, while real values or measurement solutions can vary. 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 named feature; transparent margins and unmeasured details do not alter it. How calibrated comparisons work →
Recorded properties
Bennu asteroid 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
Go smaller. Go bigger.
These links use compatible length records, ordered around the selected value.
Nearest lower value · Built worldBrooklyn Bridge486.3 mThe Brooklyn Bridge is a suspension bridge spanning the East River between Manhattan and Brooklyn in New York City.
Around the same scale · Built worldSydney Harbour Bridge503 mSydney Harbour Bridge is a steel arch bridge in Sydney, Australia, connecting the city centre with the North Shore.
Nearest higher value · PlacesPowell River500 mThe 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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