Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to the U.S. Capitol building
- Will pass within 5,650,292 km of Earth in 2021
- Classified as a Near Earth Asteroid (NEA)
- Classified as a Potentially Hazardous Asteroid (PHA)
- See orbit simulation
Overview
2015 NU13 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2015 NU13 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
2015 NU13 orbits the sun every 904 days (2.48 years), coming as close as 0.75 AU and reaching as far as 2.91 AU from the sun. Based on its brightness and the way it reflects light, 2015 NU13 is probably between 0.346 to 0.773 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 2015 NU13 has been observed. It completes a rotation on its axis every 2.97 hours.
Close Approaches
2015 NU13'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.
2015 NU13 has 10 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| Jan. 9, 2021 | 5,650,292 | 15.078 |
| Aug. 15, 2035 | 12,751,173 | 17.913 |
| Jan. 6, 2068 | 9,481,381 | 13.782 |
| Sept. 5, 2077 | 19,584,151 | 11.933 |
| Aug. 22, 2114 | 2,158,901 | 15.535 |
| Dec. 29, 2131 | 20,462,632 | 11.691 |
| Aug. 27, 2136 | 8,460,245 | 13.799 |
| Jan. 12, 2154 | 4,825,899 | 15.274 |
| Sept. 24, 2158 | 28,950,678 | 11.559 |
| Jan. 26, 2176 | 29,688,761 | 21.270 |
Images and Observations
2015 NU13's orbit is determined by observations dating back to July 12, 2015. It was last officially observed on April 4, 2021. The IAU Minor Planet Center records 386 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 2015 NU13:References
Search
or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 1.829 AU
- Eccentricity: 0.5904
- Inclination: 4.22°
- Longitude of Ascending Node: 139.79°
- Argument of Periapsis: 260.52°
- Mean Anomaly: 46.52°
Physical Characteristics
- Diameter: ~0.446 km
- Magnitude: 19.43
Derived Characteristics
- Orbit Period: 904 days (2.48 years)
- Avg. Orbit Speed: 22.01 km/s
- Aphelion Distance: 2.91 AU
- Perihelion Distance: 0.75 AU
- Rotation Period: 2.97 hours
Map Comparison
Orbit Simulation
Sky Map
The position of 2015 NU13 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 2015 NU13 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.
