Porter is a mid-sized asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified Porter as potentially hazardous because its orbit does not bring it close to Earth.
Porter orbits the sun every 1,220 days (3.34 years), coming as close as 1.95 AU and reaching as far as 2.52 AU from the sun. Porter is about 8.4 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the San Francisco Bay.
The rotation of Porter has been observed. It completes a rotation on its axis every 2.97 hours.
Porter's orbit is 0.96 AU from Earth's orbit at its closest point. This means that there is a 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.
Porter's orbit is determined by observations dating back to Jan. 23, 1950. It was last officially observed on May 3, 2023. The IAU Minor Planet Center records 4,500 observations used to determine its orbit.
The position of Porter 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.