Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the Golden Gate Bridge (0.60 km diameter)
  • Will pass within 5,340,455 km of Earth in 2036
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

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

Adonis orbits the sun every 937 days (2.57 years), coming as close as 0.44 AU and reaching as far as 3.31 AU from the sun. Its orbit is highly elliptical. Adonis is about 0.6 kilometers in diameter, making it larger than ~97% of asteroids but small compared to large asteroids, comparable in size to the Golden Gate Bridge.

Close Approaches

Adonis's orbit is 0.01 AU from Earth's orbit at its closest point. This means that there is an wide berth between this asteroid and Earth at all times.

Adonis has 10 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Feb. 7, 2036 5,340,455 23.771
July 16, 2043 22,323,671 20.407
July 1, 2061 18,584,560 28.391
Feb. 16, 2077 26,335,751 30.117
Feb. 1, 2095 22,973,140 20.170
July 10, 2102 2,920,738 24.576
Feb. 3, 2136 20,684,076 20.641
July 10, 2143 3,317,675 24.359
Feb. 9, 2177 3,364,308 24.104
July 14, 2184 13,498,324 22.196

Images and Observations

Adonis's orbit is determined by observations dating back to Feb. 21, 1936. It was last officially observed on June 9, 2020. The IAU Minor Planet Center records 119 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 Adonis:

References

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Orbital Elements

  • Epoch: 2459396.5 JD
  • Semi-major axis: 1.874 AU
  • Eccentricity: 0.764
  • Inclination: 1.32°
  • Longitude of Ascending Node: 349.5°
  • Argument of Periapsis: 43.6°
  • Mean Anomaly: 128.26°

Physical Characteristics

  • Diameter: 0.60000 km
  • Magnitude: 18.64

Derived Characteristics

  • Orbit Period: 937 days (2.57 years)
  • Avg. Orbit Speed: 21.76 km/s
  • Aphelion Distance: 3.31 AU
  • Perihelion Distance: 0.44 AU

Map Comparison

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Orbit Simulation

Sky Map

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