Key Facts

  • Categorized as a Chiron-type Comet
  • Comparable in size to the U.S. state of Rhode Island (66.17 km diameter)
  • Not a Near Earth Object
  • Not a Potentially Hazardous Object
  • See orbit simulation


167P/CINEOS is a large comet whose orbit is approximately between Jupiter and Neptune. NASA JPL has not classified 167P/CINEOS as potentially hazardous because its orbit does not bring it close to Earth.

167P/CINEOS orbits the sun every 23,700 days (64.89 years), coming as close as 11.78 AU and reaching as far as 20.50 AU from the sun. 167P/CINEOS is about 66.2 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the U.S. state of Rhode Island.

No Close Approaches

167P/CINEOS's orbit is 10.80 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.

Images and Observations

167P/CINEOS's orbit is determined by observations dating back to June 12, 2002. It was last officially observed on Oct. 19, 2011. The IAU Minor Planet Center records 94 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 167P/CINEOS:



   or view a random object

Orbital Elements

  • Epoch: 2453096.5 JD
  • Semi-major axis: 16.14 AU
  • Eccentricity: 0.27
  • Inclination: 19.13°
  • Longitude of Ascending Node: 295.84°
  • Argument of Periapsis: 343.65°
  • Mean Anomaly: 16.52°

Physical Characteristics

  • Diameter: 66.17000 km
  • Albedo: 0.053

Derived Characteristics

  • Orbit Period: 23,700 days (64.89 years)
  • Avg. Orbit Speed: 7.41 km/s
  • Aphelion Distance: 20.50 AU
  • Perihelion Distance: 11.78 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 167P/CINEOS 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.