Near-Earth Object
445305 (2010 DM56
NASA ID: 20445305
445305 (2010 DM56 will pass Earth on 16 September 2027 at a distance of 23.1 lunar distances (LD) - about 8,879,453 km - travelling at 52,442 km/h. Its estimated diameter is between 762 and 762 metres, roughly the size of Ben Nevis (1,345 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
16 September 2027
In 360 days
Miss Distance
23.1 LD
8,879,453 km
23 times the Moon's distance from Earth
Velocity
52,442 km/h
1.9 times the orbital speed of the International Space Station
Est. Diameter
762–762 m
Absolute Magnitude
H = 19.81
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 445305 (2010 DM56 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 445305 (2010 DM56 to Earth between 1939 and 2097, 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 →
