Key Facts

  • Categorized as a Aten-class Asteroid
  • Comparable in size to the Golden Gate Bridge
  • Will pass within 28,214,742 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 0.668 to 1.493 kilometers in diameter, making it small in absolute terms, but larger than ~97% of 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 days.

Close Approaches

2000 ET70's orbit is 0.03 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 ET70 has 24 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Feb. 22, 2024 28,214,742 11.838
Aug. 4, 2024 29,600,614 13.712
Feb. 19, 2035 19,905,506 13.134
Feb. 19, 2047 6,377,302 11.929
Aug. 29, 2047 24,613,653 12.825
Feb. 19, 2059 5,526,331 11.851
Aug. 29, 2059 24,149,621 12.820
Feb. 19, 2071 14,394,177 12.587
Sept. 6, 2071 29,337,159 12.851
Feb. 20, 2096 13,556,082 11.455
Aug. 17, 2096 22,496,149 13.029
Feb. 20, 2108 7,149,818 11.985
Aug. 31, 2108 25,284,410 12.811
Feb. 20, 2133 12,710,005 11.450
Aug. 19, 2133 22,378,216 13.013
Feb. 20, 2145 7,601,743 12.020
Sept. 1, 2145 25,377,184 12.813
Feb. 21, 2157 28,380,624 14.087
Feb. 21, 2170 19,432,194 11.531
Aug. 13, 2170 24,152,129 13.229
Feb. 20, 2182 8,097,817 11.510
Aug. 22, 2182 22,145,585 12.913
Feb. 20, 2194 6,325,459 11.573
Aug. 23, 2194 22,337,896 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 April 20, 2014. The IAU Minor Planet Center records 356 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: 2459000.5 JD
  • Semi-major axis: 0.9467 AU
  • Eccentricity: 0.1237
  • Inclination: 22.32°
  • Longitude of Ascending Node: 331.14°
  • Argument of Periapsis: 46.1°
  • Mean Anomaly: 119.42°

Physical Characteristics

  • Diameter: ~0.862 km
  • Magnitude: 18.0

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 days

Size Comparison

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.