Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 28,882,549 km of Earth in 2019
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2016 RU33 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2016 RU33 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.

2016 RU33 orbits the sun every 379 days (1.04 years), coming as close as 0.80 AU and reaching as far as 1.25 AU from the sun. Based on its brightness and the way it reflects light, 2016 RU33 is probably between 0.055 to 0.250 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2016 RU33'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.

2016 RU33 has 15 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Jan. 13, 2019 28,882,549 6.529
March 20, 2020 9,776,492 5.393
April 4, 2021 25,603,534 11.501
Sept. 8, 2044 27,330,341 11.929
Sept. 16, 2045 6,389,817 5.732
March 25, 2049 5,389,460 6.836
Sept. 14, 2072 7,828,578 8.160
March 11, 2076 15,061,054 4.725
April 3, 2077 20,370,017 10.485
Sept. 13, 2100 15,663,314 9.661
March 31, 2105 10,570,237 8.439
Sept. 13, 2128 15,508,038 9.642
April 1, 2133 13,129,686 8.982
Sept. 16, 2156 6,109,051 7.796
April 3, 2161 17,063,335 9.797

Images and Observations

2016 RU33's orbit is determined by observations dating back to Sept. 10, 2016. It was last officially observed on Sept. 17, 2016. The IAU Minor Planet Center records 28 observations used to determine its orbit.

Accessibility and Exploration

2016 RU33 can be reached with a journey of 386 days. This trajectory would require a delta-v of 7.562 km/s. To put this into perspective, the delta-v to launch a rocket to Low-Earth Orbit is 9.7 km/s. There are 118,692 potential trajectories and launch windows to this asteroid.

See more at the NHATS Mission Trajectories table for 2016 RU33.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2016 RU33:

References

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Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 1.02402882373 AU
  • Eccentricity: 0.223047225794
  • Inclination: 5.44724379008°
  • Longitude of Ascending Node: 344.80165939°
  • Argument of Periapsis: 108.201408849°
  • Mean Anomaly: 112.469054109°

Physical Characteristics

  • Diameter: ~0.153 km
  • Magnitude: 27.5

Derived Characteristics

  • Orbit Period: 379 days (1.04 years)
  • Avg. Orbit Speed: 29.43 km/s
  • Aphelion Distance: 1.25 AU
  • Perihelion Distance: 0.80 AU

Size Comparison

Orbit Simulation

Sky Map

The position of 2016 RU33 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.