Near-Earth Object
2025 HQ4
NASA ID: 54527652
2025 HQ4 will pass Earth on 13 April 2027 at a distance of 17.73 lunar distances (LD) - about 6,817,217 km - travelling at 44,920 km/h. Its estimated diameter is between 17 and 38 metres, roughly the size of a double-decker bus (around 11 m long). NASA does not classify it as potentially hazardous.
Close Approach Date
13 April 2027
In 297 days
Miss Distance
17.73 LD
6,817,217 km
18 times the Moon's distance from Earth
Velocity
44,920 km/h
1.6 times the orbital speed of the International Space Station
Est. Diameter
17–38 m
Absolute Magnitude
H = 26
The brightness measure astronomers use to estimate size
Hazard Classification
Not Hazardous
The real orbit in 3D
The actual path of 2025 HQ4 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 HQ4 to Earth between 1920 and 2091, 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 →
