Key Facts

Overview

2015 XS118 is a mid-sized asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified 2015 XS118 as potentially hazardous because its orbit does not bring it close to Earth.

2015 XS118 orbits the sun every 1,980 days (5.42 years), coming as close as 3.00 AU and reaching as far as 3.16 AU from the sun. Based on its brightness and the way it reflects light, 2015 XS118 is probably between 0.974 to 2.178 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. Pentagon.

No Close Approaches

2015 XS118's orbit is 2.01 AU from Earth's orbit at its closest point. This means that there is an extremely wide berth between this asteroid and Earth at all times.

Orbital simulations conducted by NASA JPL's CNEOS do not show any close approaches to Earth.

Images and Observations

2015 XS118's orbit is determined by observations dating back to April 26, 2007. It was last officially observed on May 12, 2023. The IAU Minor Planet Center records 81 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 2015 XS118:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 3.084 AU
  • Eccentricity: 0.0262
  • Inclination: 12.39°
  • Longitude of Ascending Node: 142.33°
  • Argument of Periapsis: 7.59°
  • Mean Anomaly: 83.41°

Physical Characteristics

  • Diameter: ~1.257 km
  • Magnitude: 17.18

Derived Characteristics

  • Orbit Period: 1,980 days (5.42 years)
  • Avg. Orbit Speed: 16.94 km/s
  • Aphelion Distance: 3.16 AU
  • Perihelion Distance: 3.00 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2015 XS118 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 2015 XS118 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.