Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to the Golden Gate Bridge
- Will pass within 21,949,532 km of Earth in 2021
- Classified as a Near Earth Asteroid (NEA)
- Classified as a Potentially Hazardous Asteroid (PHA)
- See orbit simulation
Overview
138404 (2000 HA24) is a small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2000 HA24 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.
2000 HA24 orbits the sun every 444 days (1.22 years), coming as close as 0.78 AU and reaching as far as 1.50 AU from the sun. Based on its brightness and the way it reflects light, 2000 HA24 is probably between 0.229 to 1.026 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.
The rotation of 2000 HA24 has been observed. It completes a rotation on its axis every 3.91 hours.
Close Approaches
2000 HA24's orbit is 0.03 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.
2000 HA24 has 23 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| Sept. 20, 2021 | 21,949,532 | 13.144 |
| March 18, 2034 | 6,118,745 | 9.814 |
| Sept. 27, 2038 | 5,243,366 | 9.374 |
| March 28, 2051 | 27,793,883 | 14.377 |
| Oct. 11, 2055 | 15,936,542 | 5.991 |
| Feb. 10, 2062 | 22,904,013 | 6.531 |
| Dec. 1, 2072 | 29,775,027 | 8.116 |
| March 17, 2079 | 4,203,676 | 9.072 |
| Sept. 26, 2083 | 7,998,265 | 10.193 |
| March 26, 2096 | 24,848,526 | 13.798 |
| Oct. 9, 2100 | 14,269,814 | 6.254 |
| Feb. 11, 2107 | 23,249,389 | 6.623 |
| Dec. 5, 2117 | 29,890,212 | 8.182 |
| March 20, 2124 | 7,217,173 | 10.082 |
| Oct. 1, 2128 | 4,908,286 | 8.639 |
| Feb. 2, 2135 | 25,568,887 | 7.166 |
| March 25, 2152 | 18,324,628 | 12.439 |
| Oct. 13, 2156 | 16,222,411 | 5.937 |
| March 11, 2163 | 12,374,375 | 6.644 |
| Sept. 25, 2167 | 16,024,550 | 11.918 |
| Nov. 19, 2184 | 27,083,213 | 7.354 |
| March 19, 2191 | 4,246,415 | 8.943 |
| Sept. 30, 2195 | 5,202,000 | 9.321 |
Images and Observations
2000 HA24's orbit is determined by observations dating back to July 20, 1982. It was last officially observed on May 21, 2023. The IAU Minor Planet Center records 1,678 observations used to determine its orbit.
Accessibility and Exploration
2000 HA24 can be reached with a journey of 378 days. This trajectory would require a delta-v of 9.521 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 13,174 potential trajectories and launch windows to this asteroid.
See more at the NHATS Mission Trajectories table for 2000 HA24.
Similar Objects
These objects have orbits that share similar characteristics to the orbit of 2000 HA24:References
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or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 1.139 AU
- Eccentricity: 0.3185
- Inclination: 2.16°
- Longitude of Ascending Node: 309.36°
- Argument of Periapsis: 142.2°
- Mean Anomaly: 175.35°
Physical Characteristics
- Diameter: ~0.628 km
- Magnitude: 19.4
Derived Characteristics
- Orbit Period: 444 days (1.22 years)
- Avg. Orbit Speed: 27.91 km/s
- Aphelion Distance: 1.50 AU
- Perihelion Distance: 0.78 AU
- Rotation Period: 3.91 hours
Map Comparison
Orbit Simulation
Sky Map
The position of 138404 (2000 HA24) 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 2000 HA24 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.
