Near-Earth Object
2026 BK5
NASA ID: 54579174
2026 BK5 will pass Earth on 28 August 2027 at a distance of 24.16 lunar distances (LD) - about 9,288,408 km - travelling at 39,874 km/h. Its estimated diameter is between 180 and 402 metres, roughly the size of The Shard in London (310 m tall). NASA classifies it as a potentially hazardous asteroid (PHA) - a designation based on size and orbital proximity, not on any predicted impact.
Close Approach Date
28 August 2027
In 329 days
Miss Distance
24.16 LD
9,288,408 km
24 times the Moon's distance from Earth
Velocity
39,874 km/h
1.4 times the orbital speed of the International Space Station
Est. Diameter
180–402 m
Absolute Magnitude
H = 20.85
The brightness measure astronomers use to estimate size
Hazard Classification
Potentially Hazardous
A watch-list label based on size and orbit, not a predicted impact
The real orbit in 3D
The actual path of 2026 BK5 around the Sun, computed from JPL orbital elements. Drag to rotate, scroll to zoom, and use the time controls to run the orbit forwards or back.
Every recorded pass
Each dot is one close approach of 2026 BK5 to Earth between 1915 and 2083, from JPL's records. Lower means closer: a dot under the dashed line passed nearer than the Moon. The orange dot is the approach on this page.
Size Comparison
Reading the Numbers
- A lunar distance (LD) is the average gap between Earth and the Moon, about 384,400 km. It is the standard yardstick for close approaches. Read more →
- Diameter estimates come from brightness. A dark surface reflects less light than a bright one, so the true size can sit anywhere in the quoted range. Read more →
- Potentially hazardous is a watch-list label based on size and orbital proximity. It does not mean an impact is expected. Read more →
