2011 JA

Very small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 2011 JA

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a football field
  • Will pass within 25,223,429 km of Earth in 2020
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

2011 JA is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2011 JA as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2011 JA orbits the sun every 471 days (1.29 years), coming as close as 0.84 AU and reaching as far as 1.53 AU from the sun. Based on its brightness and the way it reflects light, 2011 JA is probably between 0.139 to 0.310 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.

Close Approaches

2011 JA's orbit is 0.00 AU from Earth's orbit at its closest point. This means that its orbit is very close to Earth's orbit.

2011 JA has 15 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
May 1, 2020 25,223,429 24.894
Nov. 2, 2032 26,086,700 21.418
April 23, 2051 11,369,880 22.087
April 28, 2060 12,461,263 23.704
Nov. 1, 2072 26,220,482 22.244
April 19, 2091 25,393,162 21.545
April 26, 2100 207,808 22.841
Nov. 4, 2103 28,448,305 21.795
April 27, 2117 2,687,021 22.941
Nov. 3, 2120 29,053,977 21.354
May 4, 2134 28,266,440 25.169
April 25, 2155 8,033,169 22.264
Nov. 3, 2158 29,287,992 22.091
April 29, 2172 10,551,602 23.533
April 19, 2193 28,392,539 21.492

Images and Observations

2011 JA's orbit is determined by observations dating back to Oct. 30, 2001. It was last officially observed on May 16, 2020. The IAU Minor Planet Center records 90 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 2011 JA:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.185 AU
  • Eccentricity: 0.2875
  • Inclination: 41.62°
  • Longitude of Ascending Node: 215.01°
  • Argument of Periapsis: 286.17°
  • Mean Anomaly: 260.78°

Physical Characteristics

  • Diameter: ~0.179 km
  • Magnitude: 21.41

Derived Characteristics

  • Orbit Period: 471 days (1.29 years)
  • Avg. Orbit Speed: 27.37 km/s
  • Aphelion Distance: 1.53 AU
  • Perihelion Distance: 0.84 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 2011 JA 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 2011 JA 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.