Key Facts

  • Categorized as a Amor-class Asteroid
  • Comparable in size to the U.S. Capitol building
  • Will pass within 22,062,766 km of Earth in 2023
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation


2001 YM2 is a very small asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified 2001 YM2 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.

2001 YM2 orbits the sun every 1,340 days (3.67 years), coming as close as 1.02 AU and reaching as far as 3.74 AU from the sun. Based on its brightness and the way it reflects light, 2001 YM2 is probably between 0.307 to 0.686 kilometers in diameter, making it larger than 90% of asteroids but tiny compared to large asteroids, very roughly comparable in size to the U.S. Capitol building.

Close Approaches

2001 YM2's orbit is 0.08 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.

2001 YM2 has 2 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Nov. 21, 2023 22,062,766 11.449
Sept. 16, 2148 22,050,747 11.042

Images and Observations

2001 YM2's orbit is determined by observations dating back to Dec. 18, 2001. It was last officially observed on Aug. 5, 2023. The IAU Minor Planet Center records 219 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 2001 YM2:



   or view a random object

Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.38 AU
  • Eccentricity: 0.5713
  • Inclination: 4.66°
  • Longitude of Ascending Node: 93.02°
  • Argument of Periapsis: 293.08°
  • Mean Anomaly: 347.27°

Physical Characteristics

  • Diameter: ~0.396 km
  • Magnitude: 19.69

Derived Characteristics

  • Orbit Period: 1,340 days (3.67 years)
  • Avg. Orbit Speed: 19.32 km/s
  • Aphelion Distance: 3.74 AU
  • Perihelion Distance: 1.02 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2001 YM2 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 2001 YM2 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.