Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to a football field
  • Will pass within 16,396,728 km of Earth in 2025
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

2018 TF3 is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2018 TF3 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2018 TF3 orbits the sun every 1,140 days (3.12 years), coming as close as 0.60 AU and reaching as far as 3.66 AU from the sun. Its orbit is highly elliptical. Based on its brightness and the way it reflects light, 2018 TF3 is probably between 0.221 to 0.494 kilometers in diameter, making it a small to average asteroid, very roughly comparable in size to a football field.

The rotation of 2018 TF3 has been observed. It completes a rotation on its axis every 2.35 hours.

Close Approaches

2018 TF3's orbit is 0.02 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.

2018 TF3 has 11 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
May 2, 2025 16,396,728 23.897
April 21, 2050 12,698,479 18.232
April 14, 2075 24,932,712 15.831
Nov. 3, 2096 5,090,363 21.782
April 22, 2103 14,558,536 17.962
Nov. 3, 2124 10,061,673 22.474
April 24, 2131 9,083,175 18.818
Nov. 18, 2155 22,778,525 16.403
April 24, 2162 11,512,451 18.603
Nov. 19, 2186 22,240,741 16.179
May 7, 2193 24,314,994 25.224

Images and Observations

2018 TF3's orbit is determined by observations dating back to Aug. 21, 2015. It was last officially observed on Sept. 3, 2021. The IAU Minor Planet Center records 223 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 2018 TF3:

References

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Orbital Elements

  • Epoch: 2459800.5 JD
  • Semi-major axis: 2.133 AU
  • Eccentricity: 0.717
  • Inclination: 6.87°
  • Longitude of Ascending Node: 51.56°
  • Argument of Periapsis: 76.63°
  • Mean Anomaly: 59.0°

Physical Characteristics

  • Diameter: ~0.285 km
  • Magnitude: 20.4

Derived Characteristics

  • Orbit Period: 1,140 days (3.12 years)
  • Avg. Orbit Speed: 20.36 km/s
  • Aphelion Distance: 3.66 AU
  • Perihelion Distance: 0.60 AU
  • Rotation Period: 2.35 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 2018 TF3 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 2018 TF3 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.