Near-Earth Object
2023 BM4
NASA ID: 54340154
2023 BM4 will pass Earth on 25 May 2027 at a distance of 69.63 lunar distances (LD) - about 26,765,086 km - travelling at 41,496 km/h. Its estimated diameter is between 49 and 111 metres, roughly the size of a football pitch (around 105 m long). NASA does not classify it as potentially hazardous.
Close Approach Date
25 May 2027
In 339 days
Miss Distance
69.63 LD
26,765,086 km
70 times the Moon's distance from Earth
Velocity
41,496 km/h
1.5 times the orbital speed of the International Space Station
Est. Diameter
49–111 m
Absolute Magnitude
H = 23.65
The brightness measure astronomers use to estimate size
Hazard Classification
Not Hazardous
The real orbit in 3D
The actual path of 2023 BM4 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 BM4 to Earth between 1902 and 2082, 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 →
