Key Facts

  • Categorized as a Amor-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 20,982,068 km of Earth in 2024
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2017 EH4 is a very small asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified 2017 EH4 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.

2017 EH4 orbits the sun every 855 days (2.34 years), coming as close as 1.02 AU and reaching as far as 2.51 AU from the sun. Based on its brightness and the way it reflects light, 2017 EH4 is probably between 0.040 to 0.090 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

The rotation of 2017 EH4 has been observed. It completes a rotation on its axis every 0.06 hours.

Close Approaches

2017 EH4's orbit is 0.06 AU from Earth's orbit at its closest point. This means that there is a wide berth between this asteroid and Earth at all times.

2017 EH4 has 1 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
March 15, 2024 20,982,068 9.855

Images and Observations

2017 EH4's orbit is determined by observations dating back to March 8, 2017. It was last officially observed on April 23, 2017. The IAU Minor Planet Center records 123 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 2017 EH4:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.762 AU
  • Eccentricity: 0.4223
  • Inclination: 6.7°
  • Longitude of Ascending Node: 2.01°
  • Argument of Periapsis: 137.54°
  • Mean Anomaly: 293.06°

Physical Characteristics

  • Diameter: ~0.052 km
  • Magnitude: 24.1

Derived Characteristics

  • Orbit Period: 855 days (2.34 years)
  • Avg. Orbit Speed: 22.42 km/s
  • Aphelion Distance: 2.51 AU
  • Perihelion Distance: 1.02 AU
  • Rotation Period: 0.06 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 2017 EH4 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 below comparison is an artistic rendering that uses available data on the diameter of 2017 EH4 to create an approximate landscape rendering with New York City in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.