28P/Neujmin 1 is a large comet whose orbit features a relatively short period, low inclination, and is controlled by Jupiter's gravitational effects. NASA JPL has not classified 28P/Neujmin 1 as potentially hazardous because its orbit does not bring it close to Earth.
28P/Neujmin 1 orbits the sun every 6,740 days (18.45 years), coming as close as 1.58 AU and reaching as far as 12.38 AU from the sun. Its orbit is highly elliptical. 28P/Neujmin 1 is about 21.4 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the city of Indianapolis.
28P/Neujmin 1's orbit is 0.57 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.
28P/Neujmin 1's orbit is determined by observations dating back to Sept. 8, 1913. It was last officially observed on March 21, 2023. The IAU Minor Planet Center records 1,169 observations used to determine its orbit.
The position of 28P/Neujmin 1 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.