Near-Earth Object
2021 DK1
NASA ID: 54123428
2021 DK1 will pass Earth on 10 September 2027 at a distance of 161.9 lunar distances (LD) - about 62,235,348 km - travelling at 77,664 km/h. Its estimated diameter is between 50 and 112 metres, roughly the size of a football pitch (around 105 m long). NASA does not classify it as potentially hazardous.
Close Approach Date
10 September 2027
In 353 days
Miss Distance
161.9 LD
62,235,348 km
162 times the Moon's distance from Earth
Velocity
77,664 km/h
2.8 times the orbital speed of the International Space Station
Est. Diameter
50–112 m
Absolute Magnitude
H = 23.63
The brightness measure astronomers use to estimate size
Hazard Classification
Not Hazardous
The real orbit in 3D
The actual path of 2021 DK1 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 2021 DK1 to Earth between 1927 and 2086, 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 →
