2019 HG4 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2019 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 collision.
2019 HG4 orbits the sun every 1,165 days (3.19 years), coming as close as 0.75 AU and reaching as far as 3.58 AU from the sun. Based on its brightness and the way it reflects light, 2019 HG4 is probably between 0.09 to 0.21 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus.
2019 HG4's orbit is 0.04 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.
2019 HG4 has 8 close approaches predicted in the coming decades:
|Date||Distance from Earth (km)||Velocity (km/s)|
|June 11, 2019||27,163,313||13.138|
|May 17, 2035||12,374,392||19.553|
|Oct. 22, 2038||23,761,719||21.852|
|Sept. 22, 2054||29,151,356||12.957|
|May 21, 2086||6,506,671||17.502|
|Oct. 25, 2089||29,275,622||23.043|
|May 12, 2137||25,081,120||22.262|
|Oct. 16, 2140||6,750,078||17.786|
2019 HG4's orbit is determined by observations dating back to April 3, 2019. It was last officially observed on May 26, 2019. The IAU Minor Planet Center records 48 observations used to determine its orbit.
The position of 2019 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.