Key Facts


Comet P/2013 G1 (Kowalski) is an object whose orbit features a relatively short period, low inclination, and is controlled by Jupiter's gravitational effects. NASA JPL has not classified Kowalski as potentially hazardous because its orbit does not bring it close to Earth.

Kowalski orbits the sun every 6,590 days (18.04 years), coming as close as 3.35 AU and reaching as far as 10.40 AU from the sun.

No Close Approaches

Kowalski's orbit is 2.34 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

Kowalski's orbit is determined by observations dating back to April 2, 2013. It was last officially observed on Dec. 10, 2014. The IAU Minor Planet Center records 261 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 Kowalski:



   or view a random object

Orbital Elements

  • Epoch: 2456667.5 JD
  • Semi-major axis: 6.877 AU
  • Eccentricity: 0.5124
  • Inclination: 5.47°
  • Longitude of Ascending Node: 221.48°
  • Argument of Periapsis: 51.24°
  • Mean Anomaly: 1.64°

Physical Characteristics

  • Magnitude: 13.4

Derived Characteristics

  • Orbit Period: 6,590 days (18.04 years)
  • Avg. Orbit Speed: 11.35 km/s
  • Aphelion Distance: 10.40 AU
  • Perihelion Distance: 3.35 AU

Orbit Simulation

Sky Map

The position of P/2013 G1 (Kowalski) 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.