5746 (1991 CK)

Mid-sized Main-belt Asteroid

Space Reference » Main-belt Asteroids » 5746 (1991 CK)

Key Facts

Overview

5746 (1991 CK) is a mid-sized asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified 1991 CK as potentially hazardous because its orbit does not bring it close to Earth.

1991 CK orbits the sun every 1,300 days (3.56 years), coming as close as 1.83 AU and reaching as far as 2.83 AU from the sun. Based on its brightness and the way it reflects light, 1991 CK is probably between 4.927 to 11.016 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the San Francisco Bay.

No Close Approaches

1991 CK's orbit is 0.83 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

1991 CK's orbit is determined by observations dating back to Sept. 2, 1975. It was last officially observed on May 21, 2023. The IAU Minor Planet Center records 2,986 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 1991 CK:

References

Search

   or view a random object

Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.33 AU
  • Eccentricity: 0.2153
  • Inclination: 5.05°
  • Longitude of Ascending Node: 356.48°
  • Argument of Periapsis: 16.37°
  • Mean Anomaly: 167.86°

Physical Characteristics

  • Diameter: ~6.360 km
  • Magnitude: 13.66

Derived Characteristics

  • Orbit Period: 1,300 days (3.56 years)
  • Avg. Orbit Speed: 19.50 km/s
  • Aphelion Distance: 2.83 AU
  • Perihelion Distance: 1.83 AU

Map Comparison

Click to load map

Orbit Simulation

⧉

Sky Map

The position of 5746 (1991 CK) 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 1991 CK 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.