Key Facts


Comet 15P/Finlay is an object whose orbit features a relatively short period, low inclination, and is controlled by Jupiter's gravitational effects. NASA JPL has classified 15P/Finlay as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.

15P/Finlay orbits the sun every 2,380 days (6.52 years), coming as close as 0.98 AU and reaching as far as 6.00 AU from the sun. Its orbit is highly elliptical.

Close Approaches

15P/Finlay's orbit is 0.01 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.

15P/Finlay has 2 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Aug. 12, 2034 29,267,808 15.411
Oct. 22, 2060 5,001,616 12.551

Images and Observations

15P/Finlay's orbit is determined by observations dating back to April 27, 2008. It was last officially observed on March 3, 2022. The IAU Minor Planet Center records 1,655 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 15P/Finlay:



   or view a random object

Orbital Elements

  • Epoch: 2457327.5 JD
  • Semi-major axis: 3.49 AU
  • Eccentricity: 0.7202
  • Inclination: 6.8°
  • Longitude of Ascending Node: 13.75°
  • Argument of Periapsis: 347.63°
  • Mean Anomaly: 46.69°

Physical Characteristics

  • Magnitude: 15.0

Derived Characteristics

  • Orbit Period: 2,380 days (6.52 years)
  • Avg. Orbit Speed: 15.95 km/s
  • Aphelion Distance: 6.00 AU
  • Perihelion Distance: 0.98 AU

Orbit Simulation

Sky Map

The position of 15P/Finlay 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.