Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to a school bus or smaller
- Will pass within 3,096,575 km of Earth in 2021
- Classified as a Near Earth Asteroid (NEA)
- Not a Potentially Hazardous Object
- See orbit simulation
Overview
2021 EU is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2021 EU as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.
2021 EU orbits the sun every 1,090 days (2.98 years), coming as close as 0.57 AU and reaching as far as 3.58 AU from the sun. Its orbit is highly elliptical. Based on its brightness and the way it reflects light, 2021 EU is probably between 0.022 to 0.049 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.
Close Approaches
2021 EU's orbit is 0.00 AU from Earth's orbit at its closest point. This means that its orbit is very close to Earth's orbit.
2021 EU has 1 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| Feb. 27, 2021 | 3,096,575 | 22.235 |
NASA Sentry has assessed impact risk for 8 very close approach scenarios. Here are the top scenarios ordered by probability of impact:
| Date | Probability of Impact (%) | Impact Energy (Mt) |
|---|---|---|
| Aug. 29, 2056 | 0.00425 | 1.969 |
| Feb. 27, 2024 | 0.00291 | 2.053 |
| Aug. 29, 2056 | 0.00053 | 1.968 |
| Feb. 24, 2078 | 0.00002 | 1.965 |
| Feb. 23, 2093 | 0.00000 | 1.937 |
| Feb. 23, 2093 | 0.00000 | 1.937 |
| Aug. 29, 2069 | 0.00000 | 1.974 |
| Feb. 25, 2058 | 0.00000 | 2.035 |
Images and Observations
2021 EU's orbit is determined by observations dating back to March 2, 2021. It was last officially observed on March 17, 2021. The IAU Minor Planet Center records 38 observations used to determine its orbit.
Accessibility and Exploration
This asteroid is not considered a viable target for human exploration by the NHATS study.Similar Objects
These objects have orbits that share similar characteristics to the orbit of 2021 EU:References
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or view a random objectOrbital Elements
- Epoch: 2459279.5 JD
- Semi-major axis: 2.073 AU
- Eccentricity: 0.7274
- Inclination: 3.84°
- Longitude of Ascending Node: 157.84°
- Argument of Periapsis: 268.78°
- Mean Anomaly: 17.2°
Physical Characteristics
- Diameter: ~0.029 km
- Magnitude: 25.4
Derived Characteristics
- Orbit Period: 1,090 days (2.98 years)
- Avg. Orbit Speed: 20.69 km/s
- Aphelion Distance: 3.58 AU
- Perihelion Distance: 0.57 AU
Map Comparison
Orbit Simulation
Sky Map
The position of 2021 EU is indicated by a ◯ pink circle. Note that the object may not be in your current field of view. Use the controls below to adjust position, location, and time.
Size Rendering
The below comparison is an artistic rendering that uses available data on the diameter of 2021 EU to create an approximate landscape rendering with New York City in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.
