Key Facts

  • Classified as a Aten-class Asteroid
  • Comparable in size to a football field
  • Will pass within 3,203,464 km of Earth in 2019
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

2019 HM is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2019 HM 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 collision.

2019 HM orbits the sun every 363 days (0.99 years), coming as close as 0.99 AU and reaching as far as 1.00 AU from the sun. Based on its brightness and the way it reflects light, 2019 HM is probably between 0.12 to 0.54 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.

Close Approaches

2019 HM'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.

2019 HM has 11 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
April 13, 2019 3,203,464 3.009
Oct. 11, 2019 7,796,692 3.200
April 10, 2020 2,780,105 3.175
Sept. 4, 2020 18,639,231 3.900
April 4, 2021 20,012,009 5.337
March 31, 2022 38,925,081 8.732
March 28, 2023 58,261,851 12.439
Dec. 6, 2062 60,573,500 12.852
April 11, 2066 7,120,143 3.143
Oct. 7, 2066 6,547,681 3.129
April 8, 2067 4,047,583 3.260

Images and Observations

2019 HM's orbit is determined by observations dating back to April 22, 2019. It was last officially observed on April 25, 2019. The IAU Minor Planet Center records 26 observations used to determine its orbit.

Accessibility and Exploration

2019 HM can be reached with a journey of 362 days. This trajectory would require a delta-v of 3.934 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 2,437,257 potential trajectories and launch windows to this asteroid.

See more at the NHATS Mission Trajectories table for 2019 HM.

Similar Objects

These objects have orbits that share similar characteristics to the orbit of 2019 HM:

References

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Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 0.996142450384 AU
  • Eccentricity: 0.0066731753758
  • Inclination: 5.77051460454°
  • Longitude of Ascending Node: 203.019572457°
  • Argument of Periapsis: 196.829374209°
  • Mean Anomaly: 175.084836755°

Physical Characteristics

  • Diameter: ~0.33 km
  • Magnitude: 25.774

Derived Characteristics

  • Orbit Period: 363 days (0.99 years)
  • Avg. Orbit Speed: 29.84 km/s
  • Aphelion Distance: 1.00 AU
  • Perihelion Distance: 0.99 AU

Size Comparison

Orbit Simulation

Sky Map

The position of 2019 HM 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.