Near-Earth Object
2023 UG3
NASA ID: 54397150
2023 UG3 will pass Earth on 29 October 2026 at a distance of 53.88 lunar distances (LD) - about 20,709,708 km - travelling at 47,202 km/h. Its estimated diameter is between 14 and 32 metres, roughly the size of a double-decker bus (around 11 m long). NASA does not classify it as potentially hazardous.
Close Approach Date
29 October 2026
In 129 days
Miss Distance
53.88 LD
20,709,708 km
54 times the Moon's distance from Earth
Velocity
47,202 km/h
1.7 times the orbital speed of the International Space Station
Est. Diameter
14–32 m
Absolute Magnitude
H = 26.33
The brightness measure astronomers use to estimate size
Hazard Classification
Not Hazardous
The real orbit in 3D
The actual path of 2023 UG3 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 →
