Key Facts

  • Categorized as a Amor-class Asteroid
  • Comparable in size to a football field
  • Will pass within 26,810,574 km of Earth in 2021
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation


516396 (2000 WY28) is a very small asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified 2000 WY28 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.

2000 WY28 orbits the sun every 766 days (2.10 years), coming as close as 1.16 AU and reaching as far as 2.11 AU from the sun. Based on its brightness and the way it reflects light, 2000 WY28 is probably between 0.254 to 0.568 kilometers in diameter, making it larger than 90% of asteroids but tiny compared to large asteroids, very roughly comparable in size to a football field.

Close Approaches

2000 WY28's orbit is 0.18 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.

2000 WY28 has 3 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Nov. 24, 2021 26,810,574 10.453
Nov. 24, 2086 27,507,140 10.537
Nov. 25, 2172 26,804,841 10.463

Images and Observations

2000 WY28's orbit is determined by observations dating back to Nov. 20, 2000. It was last officially observed on Jan. 18, 2020. The IAU Minor Planet Center records 77 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 2000 WY28:



   or view a random object

Orbital Elements

  • Epoch: 2459396.5 JD
  • Semi-major axis: 1.639 AU
  • Eccentricity: 0.2895
  • Inclination: 19.45°
  • Longitude of Ascending Node: 63.31°
  • Argument of Periapsis: 357.38°
  • Mean Anomaly: 292.67°

Physical Characteristics

  • Diameter: ~0.328 km
  • Magnitude: 20.1

Derived Characteristics

  • Orbit Period: 766 days (2.10 years)
  • Avg. Orbit Speed: 23.28 km/s
  • Aphelion Distance: 2.11 AU
  • Perihelion Distance: 1.16 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 516396 (2000 WY28) 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 2000 WY28 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.