Near-Earth Object
2024 SM
NASA ID: 54480950
2024 SM will pass Earth on 28 August 2027 at a distance of 116.05 lunar distances (LD) - about 44,609,409 km - travelling at 57,603 km/h. Its estimated diameter is between 21 and 48 metres, roughly the size of a double-decker bus (around 11 m long). NASA does not classify it as potentially hazardous.
Close Approach Date
28 August 2027
In 343 days
Miss Distance
116.05 LD
44,609,409 km
116 times the Moon's distance from Earth
Velocity
57,603 km/h
2.1 times the orbital speed of the International Space Station
Est. Diameter
21–48 m
Absolute Magnitude
H = 25.48
The brightness measure astronomers use to estimate size
Hazard Classification
Not Hazardous
The real orbit in 3D
The actual path of 2024 SM 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 →
