Key Facts

  • Categorized as a Aten-class Asteroid
  • Comparable in size to a football field
  • Will pass within 3,201,642 km of Earth in 2019
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • 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 future 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 0.120 to 0.530 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 25 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
April 13, 2019 3,201,642 3.007
Oct. 11, 2019 7,789,579 3.198
April 10, 2020 2,776,501 3.173
Sept. 4, 2020 18,632,333 3.895
April 4, 2021 20,021,022 5.337
Nov. 8, 2064 21,945,354 5.556
April 23, 2065 21,616,588 4.858
Oct. 21, 2065 5,272,597 3.310
April 11, 2066 6,871,471 3.124
Oct. 7, 2066 6,654,238 3.131
April 9, 2067 3,910,428 3.249
April 3, 2068 23,754,206 5.981
Nov. 9, 2107 19,020,822 5.016
April 15, 2108 18,310,679 4.398
Oct. 15, 2108 3,205,291 3.120
April 9, 2109 1,934,616 3.029
Oct. 6, 2109 10,572,149 3.393
April 5, 2110 5,063,438 3.343
March 31, 2111 18,861,273 5.186
Oct. 31, 2162 25,470,792 6.269
Oct. 22, 2163 10,796,468 3.950
April 13, 2164 14,076,421 3.772
Oct. 11, 2164 1,634,728 3.083
April 9, 2165 4,665,018 2.998
Oct. 4, 2165 12,796,028 3.541

Images and Observations

2019 HM's orbit is determined by observations dating back to April 22, 2019. It was last officially observed on July 6, 2019. The IAU Minor Planet Center records 33 observations used to determine its orbit.

Accessibility and Exploration

2019 HM can be reached with a journey of 370 days. This trajectory would require a delta-v of 4.392 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 493,388 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: 0.996147318091 AU
  • Eccentricity: 0.00667097433623
  • Inclination: 5.76682601769°
  • Longitude of Ascending Node: 203.019946351°
  • Argument of Periapsis: 196.907747685°
  • Mean Anomaly: 175.005767469°

Physical Characteristics

  • Diameter: ~0.325 km
  • Magnitude: 25.84

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.