531017 (2012 BA155) is a very large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 2012 BA155 as potentially hazardous because its orbit does not bring it close to Earth.
2012 BA155 orbits the sun every 149,000 days (407.94 years), coming as close as 34.55 AU and reaching as far as 75.25 AU from the sun. Based on its brightness and the way it reflects light, 2012 BA155 is probably between 159.424 to 356.484 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of Maryland.
2012 BA155's orbit is 33.50 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.
2012 BA155's orbit is determined by observations dating back to Dec. 15, 2001. It was last officially observed on March 16, 2023. The IAU Minor Planet Center records 114 observations used to determine its orbit.
The position of 531017 (2012 BA155) 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.