Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a basketball court
  • Will pass within 1,498,070 km of Earth in 2021
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation


2021 NY1 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2021 NY1 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2021 NY1 orbits the sun every 1,400 days (3.83 years), coming as close as 0.99 AU and reaching as far as 3.92 AU from the sun. Based on its brightness and the way it reflects light, 2021 NY1 is probably between 0.114 to 0.255 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a basketball court.

Close Approaches

2021 NY1'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.

2021 NY1 has 6 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Sept. 22, 2021 1,498,070 9.354
Sept. 13, 2044 6,009,582 9.558
Oct. 27, 2063 27,470,686 15.749
Sept. 23, 2105 2,645,056 9.512
Aug. 30, 2155 6,288,148 9.537
Oct. 26, 2174 22,768,711 14.545

Images and Observations

2021 NY1's orbit is determined by observations dating back to June 12, 2021. It was last officially observed on Nov. 11, 2021. The IAU Minor Planet Center records 180 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 2021 NY1:



   or view a random object

Orbital Elements

  • Epoch: 2459800.5 JD
  • Semi-major axis: 2.453 AU
  • Eccentricity: 0.5962
  • Inclination: 6.16°
  • Longitude of Ascending Node: 174.74°
  • Argument of Periapsis: 172.09°
  • Mean Anomaly: 84.75°

Physical Characteristics

  • Diameter: ~0.147 km
  • Magnitude: 21.84

Derived Characteristics

  • Orbit Period: 1,400 days (3.83 years)
  • Avg. Orbit Speed: 19.06 km/s
  • Aphelion Distance: 3.92 AU
  • Perihelion Distance: 0.99 AU

Map Comparison

Click to load map

Orbit Simulation

Sky Map

The position of 2021 NY1 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 2021 NY1 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.