Key Facts
- Categorized as a Amor-class Asteroid
- Comparable in size to the U.S. Capitol building
- Will pass within 25,381,395 km of Earth in 2028
- Classified as a Near Earth Asteroid (NEA)
- Not a Potentially Hazardous Object
- See orbit simulation
Overview
52381 (1993 HA) is a very small asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified 1993 HA as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.
1993 HA orbits the sun every 528 days (1.45 years), coming as close as 1.09 AU and reaching as far as 1.46 AU from the sun. Based on its brightness and the way it reflects light, 1993 HA is probably between 0.168 to 0.753 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 1993 HA has been observed. It completes a rotation on its axis every 4.11 hours.
Close Approaches
1993 HA's orbit is 0.17 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.
1993 HA has 10 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| Nov. 19, 2028 | 25,381,395 | 3.031 |
| Nov. 9, 2041 | 25,269,720 | 3.431 |
| Oct. 31, 2054 | 26,478,997 | 3.780 |
| Oct. 20, 2067 | 29,607,906 | 4.133 |
| Feb. 5, 2123 | 28,544,299 | 3.337 |
| Jan. 25, 2136 | 27,425,590 | 2.676 |
| Jan. 12, 2149 | 26,990,397 | 1.700 |
| Dec. 15, 2161 | 26,613,283 | 1.108 |
| Nov. 30, 2174 | 26,018,294 | 2.440 |
| Nov. 22, 2187 | 25,602,912 | 2.918 |
Images and Observations
1993 HA's orbit is determined by observations dating back to April 17, 1993. It was last officially observed on July 6, 2022. The IAU Minor Planet Center records 389 observations used to determine its orbit.
Accessibility and Exploration
1993 HA can be reached with a journey of 378 days. This trajectory would require a delta-v of 10.314 km/s. To put this into perspective, the delta-v to launch a rocket to Low-Earth Orbit is 9.7 km/s. There are 3,436 potential trajectories and launch windows to this asteroid.
See more at the NHATS Mission Trajectories table for 1993 HA.
Similar Objects
These objects have orbits that share similar characteristics to the orbit of 1993 HA:References
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or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 1.278 AU
- Eccentricity: 0.144
- Inclination: 7.73°
- Longitude of Ascending Node: 183.26°
- Argument of Periapsis: 263.87°
- Mean Anomaly: 126.45°
Physical Characteristics
- Diameter: ~0.461 km
- Magnitude: 20.07
Derived Characteristics
- Orbit Period: 528 days (1.45 years)
- Avg. Orbit Speed: 26.33 km/s
- Aphelion Distance: 1.46 AU
- Perihelion Distance: 1.09 AU
- Rotation Period: 4.11 hours
Map Comparison
Orbit Simulation
Sky Map
The position of 52381 (1993 HA) 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 1993 HA 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.
