Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 19,264,421 km of Earth in 2026
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2018 RB6 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2018 RB6 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 RB6 orbits the sun every 868 days (2.38 years), coming as close as 0.80 AU and reaching as far as 2.76 AU from the sun. Based on its brightness and the way it reflects light, 2018 RB6 is probably between 0.018 to 0.040 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2018 RB6's orbit is 0.00 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.

2018 RB6 has 13 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Jan. 29, 2026 19,264,421 17.002
Sept. 29, 2037 14,386,689 10.896
Nov. 6, 2056 28,181,681 11.213
Dec. 15, 2075 25,864,520 10.728
Jan. 13, 2095 13,189,066 11.302
Sept. 8, 2106 17,652,227 16.985
Jan. 18, 2114 9,996,983 12.111
Sept. 3, 2125 29,093,759 19.265
Dec. 23, 2132 23,910,365 10.481
Nov. 7, 2151 28,339,216 11.228
Sept. 23, 2170 7,635,994 12.056
Feb. 1, 2178 18,378,021 16.923
Sept. 20, 2189 3,767,426 12.825

Images and Observations

2018 RB6's orbit is determined by observations dating back to Sept. 6, 2018. It was last officially observed on Sept. 14, 2018. The IAU Minor Planet Center records 109 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 RB6:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.781 AU
  • Eccentricity: 0.5513
  • Inclination: 3.52°
  • Longitude of Ascending Node: 176.54°
  • Argument of Periapsis: 241.61°
  • Mean Anomaly: 17.6°

Physical Characteristics

  • Diameter: ~0.023 km
  • Magnitude: 25.86

Derived Characteristics

  • Orbit Period: 868 days (2.38 years)
  • Avg. Orbit Speed: 22.32 km/s
  • Aphelion Distance: 2.76 AU
  • Perihelion Distance: 0.80 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2018 RB6 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.