Key Facts

  • Classified as a Aten-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 14,758,642 km of Earth in 2035
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

2018 FB4 is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2018 FB4 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.

2018 FB4 orbits the sun every 327 days (0.90 years), coming as close as 0.57 AU and reaching as far as 1.29 AU from the sun. Based on its brightness and the way it reflects light, 2018 FB4 is probably between 0.008 to 0.019 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2018 FB4'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.

2018 FB4 has 13 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
March 22, 2035 14,758,642 16.245
March 21, 2044 22,168,718 11.023
March 19, 2061 7,691,892 12.704
March 20, 2078 2,969,936 14.110
March 25, 2087 28,836,261 10.628
March 25, 2095 29,108,630 18.885
March 20, 2104 4,831,147 13.145
March 22, 2121 9,973,030 15.420
March 23, 2130 24,691,589 10.845
March 20, 2147 6,344,237 12.899
March 20, 2164 3,292,647 14.211
March 25, 2173 28,104,082 10.658
March 21, 2190 2,642,723 13.566

Images and Observations

2018 FB4's orbit is determined by observations dating back to March 21, 2018. It was last officially observed on March 22, 2018. The IAU Minor Planet Center records 31 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 2018 FB4:

References

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Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 0.929235275483 AU
  • Eccentricity: 0.387341699999
  • Inclination: 17.2529858415°
  • Longitude of Ascending Node: 181.252401544°
  • Argument of Periapsis: 233.817348018°
  • Mean Anomaly: 164.883596318°

Physical Characteristics

  • Diameter: ~0.011 km
  • Magnitude: 27.5

Derived Characteristics

  • Orbit Period: 327 days (0.90 years)
  • Avg. Orbit Speed: 30.90 km/s
  • Aphelion Distance: 1.29 AU
  • Perihelion Distance: 0.57 AU

Size Comparison

Orbit Simulation

Sky Map

The position of 2018 FB4 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.