Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 28,362,837 km of Earth in 2019
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

2023 HG is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2023 HG 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.

2023 HG orbits the sun every 730 days (2.00 years), coming as close as 0.93 AU and reaching as far as 2.24 AU from the sun. Based on its brightness and the way it reflects light, 2023 HG is probably between 0.010 to 0.023 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2023 HG'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.

2023 HG has 4 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
April 30, 2019 28,362,837 13.866
April 21, 2021 13,425,594 10.946
April 12, 2023 2,224,935 8.714
April 11, 2025 1,405,255 8.577

Images and Observations

2023 HG's orbit is determined by observations dating back to April 16, 2023. It was last officially observed on April 24, 2023. The IAU Minor Planet Center records 30 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 2023 HG:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.587 AU
  • Eccentricity: 0.414
  • Inclination: 4.82°
  • Longitude of Ascending Node: 197.56°
  • Argument of Periapsis: 321.6°
  • Mean Anomaly: 92.44°

Physical Characteristics

  • Diameter: ~0.013 km
  • Magnitude: 27.04

Derived Characteristics

  • Orbit Period: 730 days (2.00 years)
  • Avg. Orbit Speed: 23.65 km/s
  • Aphelion Distance: 2.24 AU
  • Perihelion Distance: 0.93 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2023 HG 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.