Key Facts

Overview

7569 (1989 BK) is a mid-sized asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified 1989 BK as potentially hazardous because its orbit does not bring it close to Earth.

1989 BK orbits the sun every 1,490 days (4.08 years), coming as close as 1.79 AU and reaching as far as 3.32 AU from the sun. Based on its brightness and the way it reflects light, 1989 BK is probably between 6.202 to 13.869 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the San Francisco Bay.

The rotation of 1989 BK has been observed. It completes a rotation on its axis every 3.60 hours.

No Close Approaches

1989 BK's orbit is 0.81 AU from Earth's orbit at its closest point. This means that there is a very 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

1989 BK's orbit is determined by observations dating back to Oct. 23, 1955. It was last officially observed on June 23, 2023. The IAU Minor Planet Center records 3,256 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 1989 BK:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.553 AU
  • Eccentricity: 0.2987
  • Inclination: 8.77°
  • Longitude of Ascending Node: 93.11°
  • Argument of Periapsis: 316.64°
  • Mean Anomaly: 222.7°

Physical Characteristics

  • Diameter: ~8.007 km
  • Magnitude: 13.16

Derived Characteristics

  • Orbit Period: 1,490 days (4.08 years)
  • Avg. Orbit Speed: 18.64 km/s
  • Aphelion Distance: 3.32 AU
  • Perihelion Distance: 1.79 AU
  • Rotation Period: 3.60 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 7569 (1989 BK) 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.