Key Facts


2015 MX103 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2015 MX103 as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.

2015 MX103 orbits the sun every 718 days (1.96 years), coming as close as 1.02 AU and reaching as far as 2.12 AU from the sun. Based on its brightness and the way it reflects light, 2015 MX103 is probably between 0.035 to 0.078 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

No Close Approaches

2015 MX103's orbit is 0.01 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.

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

Images and Observations

2015 MX103's orbit is determined by observations dating back to June 19, 2015. It was last officially observed on June 30, 2015. The IAU Minor Planet Center records 149 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 MX103:



   or view a random object

Orbital Elements

  • Epoch: 2458600.5 JD
  • Semi-major axis: 1.56849652349 AU
  • Eccentricity: 0.351824236723
  • Inclination: 7.38704478377°
  • Longitude of Ascending Node: 265.572855397°
  • Argument of Periapsis: 344.466408999°
  • Mean Anomaly: 353.061770081°

Physical Characteristics

  • Diameter: ~0.045 km
  • Magnitude: 24.4

Derived Characteristics

  • Orbit Period: 718 days (1.96 years)
  • Avg. Orbit Speed: 23.78 km/s
  • Aphelion Distance: 2.12 AU
  • Perihelion Distance: 1.02 AU

Size Comparison

Orbit Simulation

Sky Map

The position of 2015 MX103 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.