Key Facts

  • Categorized as a Aten-class Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 28,214,747 km of Earth in 2024
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

162421 (2000 ET70) is a small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2000 ET70 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2000 ET70 orbits the sun every 336 days (0.92 years), coming as close as 0.83 AU and reaching as far as 1.06 AU from the sun. Based on its brightness and the way it reflects light, 2000 ET70 is probably between 0.563 to 1.259 kilometers in diameter, making it larger than ~97% of asteroids but small compared to large asteroids, very roughly comparable in size to the Golden Gate Bridge.

The rotation of 2000 ET70 has been observed. It completes a rotation on its axis every 8.95 hours.

Close Approaches

2000 ET70's orbit is 0.03 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.

2000 ET70 has 24 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Feb. 22, 2024 28,214,747 11.838
Aug. 4, 2024 29,600,625 13.712
Feb. 19, 2035 19,905,499 13.134
Feb. 19, 2047 6,377,298 11.929
Aug. 29, 2047 24,613,643 12.825
Feb. 19, 2059 5,526,330 11.851
Aug. 29, 2059 24,149,613 12.820
Feb. 19, 2071 14,394,182 12.587
Sept. 6, 2071 29,337,152 12.851
Feb. 20, 2096 13,556,065 11.455
Aug. 17, 2096 22,496,147 13.029
Feb. 20, 2108 7,149,830 11.985
Aug. 31, 2108 25,284,409 12.811
Feb. 20, 2133 12,709,996 11.450
Aug. 19, 2133 22,378,215 13.013
Feb. 20, 2145 7,601,744 12.020
Sept. 1, 2145 25,377,176 12.813
Feb. 21, 2157 28,380,619 14.087
Feb. 21, 2170 19,432,201 11.531
Aug. 13, 2170 24,152,136 13.229
Feb. 20, 2182 8,097,823 11.510
Aug. 22, 2182 22,145,582 12.913
Feb. 20, 2194 6,325,465 11.573
Aug. 23, 2194 22,337,892 12.886

Images and Observations

2000 ET70's orbit is determined by observations dating back to Feb. 18, 1977. It was last officially observed on March 14, 2022. The IAU Minor Planet Center records 387 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 ET70:

References

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Orbital Elements

  • Epoch: 2459800.5 JD
  • Semi-major axis: 0.9467 AU
  • Eccentricity: 0.1238
  • Inclination: 22.32°
  • Longitude of Ascending Node: 331.14°
  • Argument of Periapsis: 46.1°
  • Mean Anomaly: 255.49°

Physical Characteristics

  • Diameter: ~0.727 km
  • Magnitude: 18.37

Derived Characteristics

  • Orbit Period: 336 days (0.92 years)
  • Avg. Orbit Speed: 30.65 km/s
  • Aphelion Distance: 1.06 AU
  • Perihelion Distance: 0.83 AU
  • Rotation Period: 8.95 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 162421 (2000 ET70) 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 2000 ET70 to create an approximate landscape rendering with Mount Everest in the background. This approximation is built for full-resolution desktop browsers. Shape, color, and texture of asteroid are imagined.