24978 (1998 HJ151) is a large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 1998 HJ151 as potentially hazardous because its orbit does not bring it close to Earth.
1998 HJ151 orbits the sun every 104,000 days (284.74 years), coming as close as 41.21 AU and reaching as far as 45.19 AU from the sun. Based on its brightness and the way it reflects light, 1998 HJ151 is probably between 93.015 to 207.989 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of Connecticut.
1998 HJ151's orbit is 40.20 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.
1998 HJ151's orbit is determined by observations dating back to April 28, 1998. It was last officially observed on May 12, 2007. The IAU Minor Planet Center records 30 observations used to determine its orbit.
The position of 24978 (1998 HJ151) 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.