Near-Earth Object
2021 CZ2
NASA ID: 54110699
2021 CZ2 will pass Earth on 21 January 2027 at a distance of 61.92 lunar distances (LD) - about 23,801,260 km - travelling at 43,911 km/h. Its estimated diameter is between 86 and 192 metres, roughly the size of The Shard in London (310 m tall). NASA does not classify it as potentially hazardous.
Close Approach Date
21 January 2027
In 214 days
Miss Distance
61.92 LD
23,801,260 km
62 times the Moon's distance from Earth
Velocity
43,911 km/h
1.6 times the orbital speed of the International Space Station
Est. Diameter
86–192 m
Absolute Magnitude
H = 22.45
The brightness measure astronomers use to estimate size
Hazard Classification
Not Hazardous
The real orbit in 3D
The actual path of 2021 CZ2 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 2021 CZ2 to Earth between 1919 and 2079, 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 →
