Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 24,288,249 km of Earth in 2021
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation


2014 KA91 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2014 KA91 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.

2014 KA91 orbits the sun every 515 days (1.41 years), coming as close as 0.91 AU and reaching as far as 1.61 AU from the sun. Based on its brightness and the way it reflects light, 2014 KA91 is probably between 0.014 to 0.062 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

The rotation of 2014 KA91 has been observed. It completes a rotation on its axis every 0.12 hours.

Close Approaches

2014 KA91's orbit is 0.02 AU from Earth's orbit at its closest point. This means that there is an wide berth between this asteroid and Earth at all times.

2014 KA91 has 3 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Oct. 13, 2021 24,288,249 5.754
July 27, 2076 25,694,172 6.482
Oct. 16, 2145 20,978,332 6.691

Images and Observations

2014 KA91's orbit is determined by observations dating back to May 30, 2014. It was last officially observed on June 9, 2014. The IAU Minor Planet Center records 34 observations used to determine its orbit.

Accessibility and Exploration

2014 KA91 can be reached with a journey of 362 days. This trajectory would require a delta-v of 11.657 km/s. To put this into perspective, the delta-v to launch a rocket to Low-Earth Orbit is 9.7 km/s. There are 37 potential trajectories and launch windows to this asteroid.

See more at the NHATS Mission Trajectories table for 2014 KA91.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2014 KA91:



   or view a random object

Orbital Elements

  • Epoch: 2459396.5 JD
  • Semi-major axis: 1.257 AU
  • Eccentricity: 0.2782
  • Inclination: 9.23°
  • Longitude of Ascending Node: 249.02°
  • Argument of Periapsis: 67.59°
  • Mean Anomaly: 328.41°

Physical Characteristics

  • Diameter: ~0.038 km
  • Magnitude: 25.5

Derived Characteristics

  • Orbit Period: 515 days (1.41 years)
  • Avg. Orbit Speed: 26.55 km/s
  • Aphelion Distance: 1.61 AU
  • Perihelion Distance: 0.91 AU
  • Rotation Period: 0.12 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 2014 KA91 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 below comparison is an artistic rendering that uses available data on the diameter of 2014 KA91 to create an approximate landscape rendering with New York City in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.