Near-Earth Object
2025 WC4
NASA ID: 54563276
2025 WC4 will pass Earth on 21 June 2026 at a distance of 10.15 lunar distances (LD) - about 3,901,841 km - travelling at 69,046 km/h. Its estimated diameter is between 228 and 511 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
21 June 2026
Tomorrow
Miss Distance
10.15 LD
3,901,841 km
10 times the Moon's distance from Earth
Velocity
69,046 km/h
2.5 times the orbital speed of the International Space Station
Est. Diameter
228–511 m
Absolute Magnitude
H = 20.33
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 2025 WC4 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 2025 WC4 to Earth between 1959 and 2049, 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 →
