Key Facts


22P/Kopff is a mid-sized comet whose orbit features a relatively short period, low inclination, and is controlled by Jupiter's gravitational effects. NASA JPL has not classified 22P/Kopff as potentially hazardous because its orbit does not bring it close to Earth.

22P/Kopff orbits the sun every 2,330 days (6.38 years), coming as close as 1.55 AU and reaching as far as 5.33 AU from the sun. 22P/Kopff is about 3.0 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the island of Manhattan.

No Close Approaches

22P/Kopff's orbit is 0.54 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.

Images and Observations

22P/Kopff's orbit is determined by observations dating back to Jan. 17, 2013. It was last officially observed on Jan. 21, 2023. The IAU Minor Planet Center records 2,668 observations used to determine its orbit.

Accessibility and Exploration

This comet is not considered a viable target for human exploration by the NHATS study.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 22P/Kopff:



   or view a random object

Orbital Elements

  • Epoch: 2458523.5 JD
  • Semi-major axis: 3.444 AU
  • Eccentricity: 0.5486
  • Inclination: 4.74°
  • Longitude of Ascending Node: 120.84°
  • Argument of Periapsis: 162.91°
  • Mean Anomaly: 185.33°

Physical Characteristics

  • Diameter: 3.00000 km
  • Magnitude: 12.0
  • Albedo: 0.05

Derived Characteristics

  • Orbit Period: 2,330 days (6.38 years)
  • Avg. Orbit Speed: 16.08 km/s
  • Aphelion Distance: 5.33 AU
  • Perihelion Distance: 1.55 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 22P/Kopff 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.

Size Rendering

The above comparison is an artistic rendering that uses available data on the diameter of 22P/Kopff to create an approximate landscape rendering with Mount Everest in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.