2004 HY78 is a large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 2004 HY78 as potentially hazardous because its orbit does not bring it close to Earth.
2004 HY78 orbits the sun every 89,300 days (244.49 years), coming as close as 31.61 AU and reaching as far as 46.61 AU from the sun. Based on its brightness and the way it reflects light, 2004 HY78 is probably between 58.151 to 130.029 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of Delaware.
2004 HY78's orbit is 30.60 AU from Earth's orbit at its closest point. This means that there is an extremely wide berth between this asteroid and Earth at all times.
Orbital simulations conducted by NASA JPL's CNEOS do not show any close approaches to Earth.
2004 HY78's orbit is determined by observations dating back to April 26, 2004. It was last officially observed on March 13, 2016. The IAU Minor Planet Center records 16 observations used to determine its orbit.
The position of 2004 HY78 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.