Near-Earth Object
2023 FM
NASA ID: 54349266
2023 FM will pass Earth on 30 August 2026 at a distance of 180.85 lunar distances (LD) - about 69,517,953 km - travelling at 97,269 km/h. Its estimated diameter is between 114 and 255 metres, roughly the size of The Shard in London (310 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
30 August 2026
In 68 days
Miss Distance
180.85 LD
69,517,953 km
181 times the Moon's distance from Earth
Velocity
97,269 km/h
3.5 times the orbital speed of the International Space Station
Est. Diameter
114–255 m
Absolute Magnitude
H = 21.84
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 2023 FM 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 2023 FM to Earth between 1912 and 2042, 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 →
