Key Facts

  • Categorized as a Amor-class Asteroid
  • Comparable in size to a school bus or smaller
  • Will pass within 22,636,215 km of Earth in 2020
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation


2020 MC4 is a very small asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified 2020 MC4 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.

2020 MC4 orbits the sun every 1,110 days (3.04 years), coming as close as 1.15 AU and reaching as far as 3.05 AU from the sun. Based on its brightness and the way it reflects light, 2020 MC4 is probably between 0.139 to 0.312 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a school bus or smaller.

Close Approaches

2020 MC4's orbit is 0.14 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.

2020 MC4 has 1 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Aug. 2, 2020 22,636,215 5.611

Images and Observations

2020 MC4's orbit is determined by observations dating back to June 28, 2020. It was last officially observed on July 1, 2020. The IAU Minor Planet Center records 15 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 2020 MC4:



   or view a random object

Orbital Elements

  • Epoch: 2459030.5 JD
  • Semi-major axis: 2.103 AU
  • Eccentricity: 0.4514
  • Inclination: 6.56°
  • Longitude of Ascending Node: 316.7°
  • Argument of Periapsis: 356.97°
  • Mean Anomaly: 349.12°

Physical Characteristics

  • Diameter: ~0.180 km
  • Magnitude: 21.4

Derived Characteristics

  • Orbit Period: 1,110 days (3.04 years)
  • Avg. Orbit Speed: 20.61 km/s
  • Aphelion Distance: 3.05 AU
  • Perihelion Distance: 1.15 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2020 MC4 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 2020 MC4 to create an approximate landscape rendering. The approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.