Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to the U.S. Capitol building
- Will pass within 11,679,454 km of Earth in 2051
- Classified as a Near Earth Asteroid (NEA)
- Classified as a Potentially Hazardous Asteroid (PHA)
- See orbit simulation
Overview
2011 JR13 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2011 JR13 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
2011 JR13 orbits the sun every 541 days (1.48 years), coming as close as 0.36 AU and reaching as far as 2.24 AU from the sun. Its orbit is highly elliptical. Based on its brightness and the way it reflects light, 2011 JR13 is probably between 0.302 to 0.676 kilometers in diameter, making it larger than 90% of asteroids but tiny compared to large asteroids, very roughly comparable in size to the U.S. Capitol building.
The rotation of 2011 JR13 has been observed. It completes a rotation on its axis every 3.96 hours.
Close Approaches
2011 JR13's orbit is 0.05 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.
2011 JR13 has 8 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| May 24, 2051 | 11,679,454 | 24.970 |
| May 15, 2054 | 25,011,786 | 31.096 |
| May 27, 2088 | 27,646,854 | 22.040 |
| May 20, 2091 | 10,541,273 | 27.881 |
| May 24, 2128 | 9,687,123 | 25.677 |
| May 16, 2131 | 29,197,110 | 31.887 |
| May 28, 2165 | 23,055,779 | 22.869 |
| May 20, 2168 | 14,766,875 | 28.755 |
Images and Observations
2011 JR13's orbit is determined by observations dating back to May 10, 2011. It was last officially observed on April 20, 2020. The IAU Minor Planet Center records 226 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 2011 JR13:References
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or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 1.299 AU
- Eccentricity: 0.7258
- Inclination: 24.7°
- Longitude of Ascending Node: 235.08°
- Argument of Periapsis: 129.58°
- Mean Anomaly: 71.41°
Physical Characteristics
- Diameter: ~0.390 km
- Magnitude: 19.72
Derived Characteristics
- Orbit Period: 541 days (1.48 years)
- Avg. Orbit Speed: 26.12 km/s
- Aphelion Distance: 2.24 AU
- Perihelion Distance: 0.36 AU
- Rotation Period: 3.96 hours
Map Comparison
Orbit Simulation
Sky Map
The position of 2011 JR13 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 2011 JR13 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.
