Near-Earth Object
2025 SO1
NASA ID: 54546137
2025 SO1 will pass Earth on 18 July 2027 at a distance of 33.66 lunar distances (LD) - about 12,939,893 km - travelling at 40,123 km/h. Its estimated diameter is between 22 and 49 metres, roughly the size of a double-decker bus (around 11 m long). NASA does not classify it as potentially hazardous.
Close Approach Date
18 July 2027
In 348 days
Miss Distance
33.66 LD
12,939,893 km
34 times the Moon's distance from Earth
Velocity
40,123 km/h
1.5 times the orbital speed of the International Space Station
Est. Diameter
22–49 m
Absolute Magnitude
H = 25.43
The brightness measure astronomers use to estimate size
Hazard Classification
Not Hazardous
The real orbit in 3D
The actual path of 2025 SO1 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 SO1 to Earth between 1905 and 2096, 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 →
