2017 HG4 is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2017 HG4 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.
2017 HG4 orbits the sun every 294 days (0.80 years), coming as close as 0.71 AU and reaching as far as 1.02 AU from the sun. Based on its brightness and the way it reflects light, 2017 HG4 is probably between 0.005 to 0.022 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.
2017 HG4's orbit is 0.00 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.
2017 HG4 has 13 close approaches predicted in the coming decades:
Date | Distance from Earth (km) | Velocity (km/s) |
---|---|---|
April 16, 2021 | 3,345,655 | 4.201 |
April 12, 2025 | 26,724,409 | 9.062 |
June 13, 2042 | 25,250,981 | 8.502 |
June 1, 2046 | 5,583,022 | 3.635 |
April 17, 2050 | 1,838,613 | 3.921 |
Feb. 8, 2063 | 28,158,014 | 3.386 |
June 15, 2063 | 12,618,842 | 5.559 |
April 13, 2067 | 11,196,427 | 5.734 |
Aug. 18, 2067 | 27,817,021 | 3.278 |
June 15, 2080 | 21,443,902 | 7.504 |
April 16, 2084 | 3,552,660 | 4.159 |
April 10, 2097 | 8,950,325 | 5.491 |
Aug. 23, 2097 | 28,203,665 | 3.712 |
2017 HG4's orbit is determined by observations dating back to April 26, 2017. It was last officially observed on May 15, 2021. The IAU Minor Planet Center records 38 observations used to determine its orbit.
2017 HG4 can be reached with a journey of 418 days. This trajectory would require a delta-v of 7.199 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 189,509 potential trajectories and launch windows to this asteroid.
See more at the NHATS Mission Trajectories table for 2017 HG4.
The position of 2017 HG4 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.