Key Facts

  • Categorized as a Interior-Earth Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 25,769,664 km of Earth in 2027
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2018 JB3 is a mid-sized 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 99% of 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 25,769,664 19.980
July 11, 2036 24,319,743 19.622
July 9, 2049 20,679,646 19.492
July 6, 2062 21,232,815 19.615
July 4, 2075 25,770,583 19.970
July 12, 2084 24,342,215 19.629
July 9, 2097 20,678,089 19.500
July 8, 2110 21,228,472 19.606
July 5, 2123 25,731,424 19.956
July 13, 2132 24,350,130 19.638
July 10, 2145 20,671,510 19.494
July 8, 2158 21,199,991 19.596
July 5, 2171 25,711,811 19.961
July 13, 2180 24,356,460 19.634
July 11, 2193 20,685,838 19.491

Images and Observations

2018 JB3's orbit is determined by observations dating back to July 12, 2015. It was last officially observed on Feb. 7, 2021. The IAU Minor Planet Center records 81 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: 2459396.5 JD
  • Semi-major axis: 0.6832 AU
  • Eccentricity: 0.2905
  • Inclination: 40.39°
  • Longitude of Ascending Node: 106.42°
  • Argument of Periapsis: 355.25°
  • Mean Anomaly: 321.82°

Physical Characteristics

  • Diameter: ~1.036 km
  • Magnitude: 17.6

Derived Characteristics

  • Orbit Period: 206 days (0.56 years)
  • Avg. Orbit Speed: 36.08 km/s
  • Aphelion Distance: 0.88 AU
  • Perihelion Distance: 0.48 AU

Map Comparison

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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.

Size Rendering

The above comparison is an artistic rendering that uses available data on the diameter of 2018 JB3 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.