Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 19,483,250 km of Earth in 2019
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2015 RO36 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2015 RO36 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.

2015 RO36 orbits the sun every 460 days (1.26 years), coming as close as 0.66 AU and reaching as far as 1.67 AU from the sun. Based on its brightness and the way it reflects light, 2015 RO36 is probably between 0.070 to 0.156 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2015 RO36's orbit is 0.01 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.

2015 RO36 has 21 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Feb. 22, 2019 19,483,250 20.019
Sept. 16, 2020 23,092,443 20.955
March 6, 2024 18,418,747 15.129
Sept. 5, 2049 19,059,785 14.223
Feb. 18, 2053 29,344,844 21.950
Sept. 14, 2054 12,127,887 19.062
March 2, 2058 11,362,661 16.590
Sept. 4, 2083 23,042,667 13.671
Sept. 13, 2088 9,778,133 18.663
March 1, 2092 11,013,651 16.675
Sept. 7, 2117 14,094,109 14.922
Feb. 22, 2121 22,986,578 20.742
Sept. 17, 2122 19,331,728 20.291
March 7, 2126 16,358,675 15.405
Sept. 9, 2151 8,124,349 15.807
Feb. 24, 2155 18,728,180 19.929
Sept. 18, 2156 23,800,050 21.093
March 8, 2160 18,876,036 14.983
Sept. 7, 2185 15,460,399 14.727
Feb. 21, 2189 25,872,544 21.312
Sept. 16, 2190 15,667,640 19.667

Images and Observations

2015 RO36's orbit is determined by observations dating back to Sept. 11, 2015. It was last officially observed on Oct. 8, 2015. The IAU Minor Planet Center records 107 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 2015 RO36:

References

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Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 1.166 AU
  • Eccentricity: 0.4339
  • Inclination: 20.33°
  • Longitude of Ascending Node: 348.34°
  • Argument of Periapsis: 260.67°
  • Mean Anomaly: 321.35°

Physical Characteristics

  • Diameter: ~0.090 km
  • Magnitude: 22.9

Derived Characteristics

  • Orbit Period: 460 days (1.26 years)
  • Avg. Orbit Speed: 27.58 km/s
  • Aphelion Distance: 1.67 AU
  • Perihelion Distance: 0.66 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2015 RO36 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 2015 RO36 to create an approximate landscape rendering. The approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.