Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to a basketball court
- Will pass within 1,437,937 km of Earth in 2019
- Classified as a Near Earth Asteroid (NEA)
- Classified as a Potentially Hazardous Asteroid (PHA)
- See orbit simulation
Overview
2019 UN12 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2019 UN12 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
2019 UN12 orbits the sun every 1,240 days (3.39 years), coming as close as 0.35 AU and reaching as far as 4.17 AU from the sun. Its orbit is highly elliptical. Based on its brightness and the way it reflects light, 2019 UN12 is probably between 0.113 to 0.252 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a basketball court.
The rotation of 2019 UN12 has been observed. It completes a rotation on its axis every 0.13 hours.
Close Approaches
2019 UN12's orbit is 0.01 AU from Earth's orbit at its closest point. This means that there is a wide berth between this asteroid and Earth at all times.
2019 UN12 has 12 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| Nov. 13, 2019 | 1,437,937 | 28.816 |
| July 6, 2023 | 18,687,112 | 31.813 |
| Nov. 6, 2036 | 20,158,379 | 32.893 |
| June 23, 2040 | 25,809,042 | 24.400 |
| July 5, 2067 | 14,714,769 | 30.394 |
| Nov. 18, 2100 | 22,054,173 | 25.141 |
| Nov. 16, 2137 | 10,643,911 | 27.276 |
| June 28, 2141 | 26,581,196 | 25.052 |
| July 9, 2168 | 22,113,843 | 31.867 |
| Nov. 15, 2181 | 8,389,380 | 29.074 |
| July 6, 2185 | 20,197,264 | 30.670 |
| Nov. 19, 2198 | 13,772,809 | 26.573 |
Images and Observations
2019 UN12's orbit is determined by observations dating back to Oct. 23, 2019. It was last officially observed on July 16, 2023. The IAU Minor Planet Center records 147 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 2019 UN12:References
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or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 2.257 AU
- Eccentricity: 0.8459
- Inclination: 5.19°
- Longitude of Ascending Node: 222.61°
- Argument of Periapsis: 301.74°
- Mean Anomaly: 31.95°
Physical Characteristics
- Diameter: ~0.146 km
- Magnitude: 21.86
Derived Characteristics
- Orbit Period: 1,240 days (3.39 years)
- Avg. Orbit Speed: 19.80 km/s
- Aphelion Distance: 4.17 AU
- Perihelion Distance: 0.35 AU
- Rotation Period: 0.13 hours
Map Comparison
Orbit Simulation
Sky Map
The position of 2019 UN12 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 2019 UN12 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.
