311P/PANSTARRS is a large comet whose orbit brings it closer to the sun than Jupiter. NASA JPL has not classified 311P/PANSTARRS as potentially hazardous because its orbit does not bring it close to Earth.
311P/PANSTARRS orbits the sun every 1,180 days (3.23 years), coming as close as 1.94 AU and reaching as far as 2.44 AU from the sun. Based on its brightness and the way it reflects light, 311P/PANSTARRS is probably between 2658.000 to 5943.469 kilometers in diameter, making it the largest asteroid/dwarf planet, very roughly comparable in size to the U.S. state of Alaska.
311P/PANSTARRS's orbit is 0.95 AU from Earth's orbit at its closest point. This means that there is an very 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.
311P/PANSTARRS's orbit is determined by observations dating back to Jan. 17, 2005. It was last officially observed on March 7, 2018. The IAU Minor Planet Center records 191 observations used to determine its orbit.
The position of 311P/PANSTARRS 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.