Near-Earth Object
2021 TH12
NASA ID: 54208623
2021 TH12 will pass Earth on 5 July 2026 at a distance of 119.35 lunar distances (LD) - about 45,879,347 km - travelling at 43,905 km/h. Its estimated diameter is between 71 and 159 metres, roughly the size of The Shard in London (310 m tall). NASA does not classify it as potentially hazardous.
Close Approach Date
5 July 2026
In 11 days
Miss Distance
119.35 LD
45,879,347 km
119 times the Moon's distance from Earth
Velocity
43,905 km/h
1.6 times the orbital speed of the International Space Station
Est. Diameter
71–159 m
Absolute Magnitude
H = 22.87
The brightness measure astronomers use to estimate size
Hazard Classification
Not Hazardous
The real orbit in 3D
The actual path of 2021 TH12 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.
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 →
