Key Facts

  • Categorized as a Aten-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 23,354,022 km of Earth in 2021
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2018 HU is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2018 HU 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 HU orbits the sun every 269 days (0.74 years), coming as close as 0.52 AU and reaching as far as 1.11 AU from the sun. Based on its brightness and the way it reflects light, 2018 HU is probably between 0.019 to 0.043 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2018 HU'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.

2018 HU has 10 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
June 9, 2021 23,354,022 8.409
April 17, 2029 25,153,928 14.432
May 8, 2032 17,303,247 8.227
April 18, 2043 3,101,979 9.850
April 17, 2093 20,056,242 13.386
June 24, 2135 27,861,751 10.874
April 19, 2143 3,451,566 10.106
June 6, 2146 23,445,652 8.295
June 24, 2160 27,559,574 10.669
April 18, 2193 17,690,060 12.941

Images and Observations

2018 HU's orbit is determined by observations dating back to April 20, 2018. It was last officially observed on May 4, 2018. The IAU Minor Planet Center records 135 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 HU:

References

Search

   or view a random object

Orbital Elements

  • Epoch: 2459200.5 JD
  • Semi-major axis: 0.8148 AU
  • Eccentricity: 0.3638
  • Inclination: 10.72°
  • Longitude of Ascending Node: 33.34°
  • Argument of Periapsis: 28.25°
  • Mean Anomaly: 341.65°

Physical Characteristics

  • Diameter: ~0.025 km
  • Magnitude: 25.7

Derived Characteristics

  • Orbit Period: 269 days (0.74 years)
  • Avg. Orbit Speed: 32.95 km/s
  • Aphelion Distance: 1.11 AU
  • Perihelion Distance: 0.52 AU

Map Comparison

Click to load map

Orbit Simulation

Sky Map

The position of 2018 HU 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.