Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a football field
  • Will pass within 8,961,451 km of Earth in 2024
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation


2017 HP3 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2017 HP3 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2017 HP3 orbits the sun every 641 days (1.75 years), coming as close as 0.85 AU and reaching as far as 2.06 AU from the sun. Based on its brightness and the way it reflects light, 2017 HP3 is probably between 0.133 to 0.298 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.

Close Approaches

2017 HP3's orbit is 0.03 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 HP3 has 9 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
May 16, 2024 8,961,451 15.801
May 27, 2031 26,226,086 14.366
May 1, 2089 28,726,848 20.563
May 9, 2096 9,521,263 17.763
May 17, 2103 7,464,680 15.962
May 28, 2110 25,898,390 14.344
May 6, 2168 19,501,272 19.211
May 14, 2175 3,629,031 16.647
May 24, 2182 19,943,832 14.732

Images and Observations

2017 HP3's orbit is determined by observations dating back to April 22, 2017. It was last officially observed on Nov. 18, 2017. The IAU Minor Planet Center records 104 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 HP3:



   or view a random object

Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.454 AU
  • Eccentricity: 0.4159
  • Inclination: 23.75°
  • Longitude of Ascending Node: 54.51°
  • Argument of Periapsis: 236.21°
  • Mean Anomaly: 197.25°

Physical Characteristics

  • Diameter: ~0.172 km
  • Magnitude: 21.5

Derived Characteristics

  • Orbit Period: 641 days (1.75 years)
  • Avg. Orbit Speed: 24.68 km/s
  • Aphelion Distance: 2.06 AU
  • Perihelion Distance: 0.85 AU

Map Comparison

Click to load map

Orbit Simulation

Sky Map

The position of 2017 HP3 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 HP3 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.