Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to the Golden Gate Bridge
- Will pass within 25,013,751 km of Earth in 2031
- Classified as a Near Earth Asteroid (NEA)
- Classified as a Potentially Hazardous Asteroid (PHA)
- See orbit simulation
Overview
2017 HT2 is a small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2017 HT2 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
2017 HT2 orbits the sun every 1,260 days (3.45 years), coming as close as 1.00 AU and reaching as far as 3.57 AU from the sun. Based on its brightness and the way it reflects light, 2017 HT2 is probably between 0.563 to 1.259 kilometers in diameter, making it larger than ~97% of asteroids but small compared to large asteroids, very roughly comparable in size to the Golden Gate Bridge.
Close Approaches
2017 HT2'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.
2017 HT2 has 6 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| Aug. 23, 2031 | 25,013,751 | 11.796 |
| July 6, 2069 | 15,746,786 | 14.065 |
| Aug. 13, 2100 | 18,749,512 | 11.064 |
| July 16, 2138 | 3,421,339 | 12.429 |
| Sept. 2, 2162 | 29,547,718 | 12.075 |
| July 8, 2193 | 13,356,448 | 13.821 |
Images and Observations
2017 HT2's orbit is determined by observations dating back to Jan. 17, 2015. It was last officially observed on Dec. 1, 2021. The IAU Minor Planet Center records 86 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 2017 HT2:References
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or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 2.285 AU
- Eccentricity: 0.5628
- Inclination: 14.37°
- Longitude of Ascending Node: 116.23°
- Argument of Periapsis: 202.75°
- Mean Anomaly: 252.48°
Physical Characteristics
- Diameter: ~0.727 km
- Magnitude: 18.37
Derived Characteristics
- Orbit Period: 1,260 days (3.45 years)
- Avg. Orbit Speed: 19.73 km/s
- Aphelion Distance: 3.57 AU
- Perihelion Distance: 1.00 AU
Map Comparison
Orbit Simulation
Sky Map
The position of 2017 HT2 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 above comparison is an artistic rendering that uses available data on the diameter of 2017 HT2 to create an approximate landscape rendering with Mount Everest in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.
