Near-Earth Object
528807 (2009 BL71
NASA ID: 20528807
528807 (2009 BL71 will pass Earth on 9 December 2026 at a distance of 146.01 lunar distances (LD) - about 56,124,961 km - travelling at 71,488 km/h. Its estimated diameter is between 102 and 229 metres, roughly the size of The Shard in London (310 m tall). NASA does not classify it as potentially hazardous.
Close Approach Date
9 December 2026
In 80 days
Miss Distance
146.01 LD
56,124,961 km
146 times the Moon's distance from Earth
Velocity
71,488 km/h
2.6 times the orbital speed of the International Space Station
Est. Diameter
102–229 m
Absolute Magnitude
H = 22.07
The brightness measure astronomers use to estimate size
Hazard Classification
Not Hazardous
The real orbit in 3D
The actual path of 528807 (2009 BL71 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 528807 (2009 BL71 to Earth between 1906 and 2093, 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 →
