Near-Earth Object
2020 SF4
NASA ID: 54054605
2020 SF4 will pass Earth on 24 March 2027 at a distance of 143.88 lunar distances (LD) - about 55,305,990 km - travelling at 21,303 km/h. Its estimated diameter is between 14 and 32 metres, roughly the size of a double-decker bus (around 11 m long). NASA does not classify it as potentially hazardous.
Close Approach Date
24 March 2027
In 272 days
Miss Distance
143.88 LD
55,305,990 km
144 times the Moon's distance from Earth
Velocity
21,303 km/h
0.8 times the orbital speed of the International Space Station
Est. Diameter
14–32 m
Absolute Magnitude
H = 26.37
The brightness measure astronomers use to estimate size
Hazard Classification
Not Hazardous
The real orbit in 3D
The actual path of 2020 SF4 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 2020 SF4 to Earth between 1967 and 2020, 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 →
