Key Facts
- Categorized as a Apollo-class Asteroid
- Comparable in size to a school bus or smaller
- Will pass within 28,641,987 km of Earth in 2022
- Classified as a Near Earth Asteroid (NEA)
- Not a Potentially Hazardous Object
- See orbit simulation
Overview
2023 HO4 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2023 HO4 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.
2023 HO4 orbits the sun every 374 days (1.02 years), coming as close as 0.84 AU and reaching as far as 1.19 AU from the sun. Based on its brightness and the way it reflects light, 2023 HO4 is probably between 0.041 to 0.182 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.
Close Approaches
2023 HO4's orbit is 0.11 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.
2023 HO4 has 45 close approaches predicted in the coming decades:
| Date | Distance from Earth (km) | Velocity (km/s) |
|---|---|---|
| June 2, 2022 | 28,641,987 | 9.849 |
| June 20, 2023 | 17,587,751 | 6.082 |
| April 24, 2024 | 28,722,402 | 4.456 |
| July 28, 2024 | 21,036,993 | 6.216 |
| Sept. 1, 2025 | 25,120,978 | 6.828 |
| Feb. 24, 2026 | 29,548,342 | 6.169 |
| Oct. 6, 2026 | 26,293,575 | 6.083 |
| Jan. 31, 2027 | 24,121,820 | 5.778 |
| Jan. 2, 2028 | 16,753,807 | 5.412 |
| Dec. 23, 2028 | 22,914,756 | 8.819 |
| June 3, 2065 | 26,417,442 | 9.267 |
| June 22, 2066 | 17,496,237 | 5.927 |
| April 23, 2067 | 28,760,059 | 4.527 |
| July 29, 2067 | 21,085,340 | 6.233 |
| Aug. 30, 2068 | 24,997,490 | 6.799 |
| Feb. 26, 2069 | 29,487,950 | 6.153 |
| Oct. 3, 2069 | 26,365,883 | 6.227 |
| Feb. 2, 2070 | 24,596,753 | 5.825 |
| Jan. 6, 2071 | 17,471,030 | 5.320 |
| Dec. 24, 2071 | 20,062,944 | 7.970 |
| June 8, 2109 | 21,988,369 | 8.031 |
| July 5, 2110 | 18,081,499 | 5.716 |
| Aug. 11, 2111 | 22,693,676 | 6.537 |
| Sept. 12, 2112 | 25,915,506 | 6.756 |
| Feb. 17, 2113 | 28,033,336 | 6.109 |
| Oct. 21, 2113 | 25,724,847 | 5.385 |
| Jan. 23, 2114 | 21,765,424 | 5.550 |
| Dec. 28, 2114 | 16,029,084 | 5.992 |
| Dec. 26, 2115 | 27,448,858 | 9.990 |
| June 5, 2150 | 26,199,144 | 9.274 |
| June 28, 2151 | 17,426,443 | 5.834 |
| Aug. 7, 2152 | 22,205,748 | 6.474 |
| Sept. 13, 2153 | 25,976,388 | 6.768 |
| Feb. 17, 2154 | 28,341,782 | 6.135 |
| Oct. 26, 2154 | 25,472,070 | 5.096 |
| Jan. 20, 2155 | 21,201,387 | 5.499 |
| Dec. 26, 2155 | 16,686,059 | 6.666 |
| June 19, 2189 | 17,631,211 | 6.402 |
| April 26, 2190 | 29,234,701 | 4.436 |
| July 30, 2190 | 21,024,941 | 6.261 |
| Sept. 7, 2191 | 25,565,509 | 6.835 |
| Feb. 22, 2192 | 29,352,693 | 6.188 |
| Oct. 19, 2192 | 25,963,974 | 5.519 |
| Jan. 23, 2193 | 22,325,726 | 5.609 |
| Dec. 26, 2193 | 16,264,063 | 6.371 |
Images and Observations
2023 HO4's orbit is determined by observations dating back to April 15, 2023. It was last officially observed on May 31, 2023. The IAU Minor Planet Center records 31 observations used to determine its orbit.
Accessibility and Exploration
2023 HO4 can be reached with a journey of 450 days. This trajectory would require a delta-v of 8.756 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 112,668 potential trajectories and launch windows to this asteroid.
See more at the NHATS Mission Trajectories table for 2023 HO4.
Similar Objects
These objects have orbits that share similar characteristics to the orbit of 2023 HO4:References
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or view a random objectOrbital Elements
- Epoch: 2460200.5 JD
- Semi-major axis: 1.016 AU
- Eccentricity: 0.1721
- Inclination: 7.51°
- Longitude of Ascending Node: 144.11°
- Argument of Periapsis: 208.39°
- Mean Anomaly: 17.01°
Physical Characteristics
- Diameter: ~0.112 km
- Magnitude: 23.16
Derived Characteristics
- Orbit Period: 374 days (1.02 years)
- Avg. Orbit Speed: 29.55 km/s
- Aphelion Distance: 1.19 AU
- Perihelion Distance: 0.84 AU
Map Comparison
Orbit Simulation
Sky Map
The position of 2023 HO4 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 2023 HO4 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.
