Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to a football field
- Will pass within 24,715,980 km of Earth in 2057
- Classified as a Near Earth Asteroid (NEA)
- Classified as a Potentially Hazardous Asteroid (PHA)
- See orbit simulation
Overview
2019 HN is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2019 HN as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
2019 HN orbits the sun every 929 days (2.54 years), coming as close as 0.68 AU and reaching as far as 3.05 AU from the sun. Based on its brightness and the way it reflects light, 2019 HN is probably between 0.221 to 0.494 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.
Close Approaches
2019 HN's orbit is 0.01 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.
2019 HN has 8 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| Oct. 15, 2057 | 24,715,980 | 27.527 |
| April 27, 2075 | 27,649,637 | 22.095 |
| Oct. 13, 2085 | 20,728,067 | 26.386 |
| April 26, 2103 | 23,636,198 | 22.603 |
| Oct. 13, 2113 | 19,806,178 | 26.013 |
| April 27, 2131 | 26,067,411 | 22.290 |
| Oct. 15, 2141 | 21,444,698 | 26.901 |
| Oct. 17, 2169 | 26,788,974 | 28.382 |
Images and Observations
2019 HN's orbit is determined by observations dating back to April 23, 2019. It was last officially observed on Sept. 18, 2019. The IAU Minor Planet Center records 53 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 HN:References
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or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 1.863 AU
- Eccentricity: 0.6357
- Inclination: 34.75°
- Longitude of Ascending Node: 207.39°
- Argument of Periapsis: 81.71°
- Mean Anomaly: 236.8°
Physical Characteristics
- Diameter: ~0.285 km
- Magnitude: 20.4
Derived Characteristics
- Orbit Period: 929 days (2.54 years)
- Avg. Orbit Speed: 21.82 km/s
- Aphelion Distance: 3.05 AU
- Perihelion Distance: 0.68 AU
Map Comparison
Orbit Simulation
Sky Map
The position of 2019 HN 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 HN 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.
