Near-Earth Object
2023 HC
NASA ID: 54354412
2023 HC will pass Earth on 11 July 2026 at a distance of 166.51 lunar distances (LD) - about 64,007,351 km - travelling at 17,081 km/h. Its estimated diameter is between 15 and 33 metres, roughly the size of a double-decker bus (around 11 m long). NASA does not classify it as potentially hazardous.
Close Approach Date
11 July 2026
In 18 days
Miss Distance
166.51 LD
64,007,351 km
167 times the Moon's distance from Earth
Velocity
17,081 km/h
0.6 times the orbital speed of the International Space Station
Est. Diameter
15–33 m
Absolute Magnitude
H = 26.26
The brightness measure astronomers use to estimate size
Hazard Classification
Not Hazardous
The real orbit in 3D
The actual path of 2023 HC 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 →
