Key Facts

  • Classified as a Interior-Earth Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 25,770,718 km of Earth in 2027
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

2018 JB3 is a small asteroid with an orbit that is entirely confined within Earth's orbit. NASA JPL has classified 2018 JB3 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 JB3 orbits the sun every 206 days (0.56 years), coming as close as 0.48 AU and reaching as far as 0.88 AU from the sun. Based on its brightness and the way it reflects light, 2018 JB3 is probably between 0.803 to 1.795 kilometers in diameter, making it larger than most asteroids, very roughly comparable in size to the Golden Gate Bridge.

Close Approaches

2018 JB3's orbit is 0.14 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 JB3 has 15 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
July 4, 2027 25,770,718 19.980
July 11, 2036 24,317,866 19.622
July 9, 2049 20,678,621 19.492
July 6, 2062 21,235,164 19.615
July 4, 2075 25,777,268 19.971
July 12, 2084 24,335,312 19.628
July 9, 2097 20,675,497 19.500
July 8, 2110 21,233,409 19.607
July 5, 2123 25,743,695 19.957
July 13, 2132 24,338,246 19.637
July 10, 2145 20,667,310 19.494
July 8, 2158 21,207,420 19.597
July 5, 2171 25,729,606 19.962
July 13, 2180 24,339,483 19.633
July 11, 2193 20,679,890 19.490

Images and Observations

2018 JB3's orbit is determined by observations dating back to May 9, 2018. It was last officially observed on July 2, 2019. The IAU Minor Planet Center records 75 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 JB3:

References

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Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 0.683190120355 AU
  • Eccentricity: 0.290495178659
  • Inclination: 40.3899724379°
  • Longitude of Ascending Node: 106.425262945°
  • Argument of Periapsis: 355.237806045°
  • Mean Anomaly: 12.5438821834°

Physical Characteristics

  • Diameter: ~1.036 km
  • Magnitude: 17.6

Derived Characteristics

  • Orbit Period: 206 days (0.56 years)
  • Avg. Orbit Speed: 36.03 km/s
  • Aphelion Distance: 0.88 AU
  • Perihelion Distance: 0.48 AU

Size Comparison

Orbit Simulation

Sky Map

The position of 2018 JB3 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.