139289 (2001 KR1)

Mid-sized Apollo-class Asteroid

Near-Earth
Space Reference » Apollo-class Asteroids » 139289 (2001 KR1)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the Golden Gate Bridge (1.13 km diameter)
  • Will pass within 26,507,477 km of Earth in 2059
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

139289 (2001 KR1) is a mid-sized asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2001 KR1 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.

2001 KR1 orbits the sun every 516 days (1.41 years), coming as close as 0.20 AU and reaching as far as 2.32 AU from the sun. Its orbit is highly elliptical. 2001 KR1 is about 1.1 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the Golden Gate Bridge.

The rotation of 2001 KR1 has been observed. It completes a rotation on its axis every 11.30 hours.

Close Approaches

2001 KR1's orbit is 0.18 AU from Earth's orbit at its closest point. This means that there is a wide berth between this asteroid and Earth at all times.

2001 KR1 has 4 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
June 11, 2059 26,507,477 30.600
June 11, 2100 25,624,400 31.308
June 10, 2141 25,335,857 32.176
June 9, 2182 25,336,011 32.671

Images and Observations

2001 KR1's orbit is determined by observations dating back to May 18, 2001. It was last officially observed on May 28, 2023. The IAU Minor Planet Center records 567 observations used to determine its orbit.

Accessibility and Exploration

This asteroid 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 2001 KR1:

References

Search

   or view a random object

Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.26 AU
  • Eccentricity: 0.8413
  • Inclination: 23.26°
  • Longitude of Ascending Node: 102.72°
  • Argument of Periapsis: 291.47°
  • Mean Anomaly: 229.23°

Physical Characteristics

  • Diameter: 1.12600 km
  • Magnitude: 17.75
  • Albedo: 0.127

Derived Characteristics

  • Orbit Period: 516 days (1.41 years)
  • Avg. Orbit Speed: 26.57 km/s
  • Aphelion Distance: 2.32 AU
  • Perihelion Distance: 0.20 AU
  • Rotation Period: 11.30 hours

Map Comparison

Click to load map

Orbit Simulation

⧉

Sky Map

The position of 139289 (2001 KR1) 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 2001 KR1 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.