Key Facts

  • Classified as a Apollo-class Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 12,697,449 km of Earth in 2062
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

Aristaeus is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified Aristaeus as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

Aristaeus orbits the sun every 739 days (2.02 years), coming as close as 0.79 AU and reaching as far as 2.40 AU from the sun. Based on its brightness and the way it reflects light, Aristaeus is probably between 0.686 to 1.535 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to the Golden Gate Bridge.

Close Approaches

Aristaeus's orbit is 0.01 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.

Aristaeus has 5 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
March 26, 2062 12,697,449 15.967
April 2, 2064 8,172,764 18.760
March 19, 2145 26,244,415 14.529
March 30, 2147 4,447,586 17.026
April 6, 2149 14,373,099 19.684

Images and Observations

Aristaeus's orbit is determined by observations dating back to April 17, 1977. It was last officially observed on June 9, 2018. The IAU Minor Planet Center records 58 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 Aristaeus:

References

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Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 1.59954994457 AU
  • Eccentricity: 0.503019923061
  • Inclination: 23.0606248466°
  • Longitude of Ascending Node: 191.210110576°
  • Argument of Periapsis: 290.860001094°
  • Mean Anomaly: 308.112285593°

Physical Characteristics

  • Diameter: ~0.886 km
  • Magnitude: 17.94

Derived Characteristics

  • Orbit Period: 739 days (2.02 years)
  • Avg. Orbit Speed: 23.55 km/s
  • Aphelion Distance: 2.40 AU
  • Perihelion Distance: 0.79 AU

Size Comparison

Orbit Simulation

Sky Map

The position of Aristaeus 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.