2010 ON101

Very small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 2010 ON101

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a football field (0.24 km diameter)
  • Will pass within 6,870,070 km of Earth in 2035
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

2010 ON101 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2010 ON101 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2010 ON101 orbits the sun every 760 days (2.08 years), coming as close as 0.96 AU and reaching as far as 2.30 AU from the sun. 2010 ON101 is about 0.2 kilometers in diameter, making it a small to average asteroid, comparable in size to a football field.

Close Approaches

2010 ON101's orbit is 0.05 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.

2010 ON101 has 8 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
May 29, 2035 6,870,070 8.618
July 18, 2062 19,591,487 10.135
May 30, 2087 6,837,081 8.605
April 29, 2112 21,333,066 11.936
July 28, 2114 26,510,868 11.736
June 19, 2139 10,333,858 8.534
May 17, 2164 7,621,975 9.204
July 6, 2191 14,485,283 8.961

Images and Observations

2010 ON101's orbit is determined by observations dating back to May 1, 2010. It was last officially observed on Dec. 19, 2019. The IAU Minor Planet Center records 138 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 2010 ON101:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.629 AU
  • Eccentricity: 0.409
  • Inclination: 9.31°
  • Longitude of Ascending Node: 251.57°
  • Argument of Periapsis: 8.14°
  • Mean Anomaly: 128.07°

Physical Characteristics

  • Diameter: 0.23800 km
  • Magnitude: 20.2
  • Albedo: 0.225

Derived Characteristics

  • Orbit Period: 760 days (2.08 years)
  • Avg. Orbit Speed: 23.32 km/s
  • Aphelion Distance: 2.30 AU
  • Perihelion Distance: 0.96 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 2010 ON101 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 2010 ON101 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.