164121 (2003 YT1)

Mid-sized Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 164121 (2003 YT1)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to Mount Everest (1.72 km diameter)
  • Will pass within 8,879,937 km of Earth in 2023
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

164121 (2003 YT1) is a mid-sized asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2003 YT1 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2003 YT1 orbits the sun every 427 days (1.17 years), coming as close as 0.79 AU and reaching as far as 1.43 AU from the sun. 2003 YT1 is about 1.7 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to Mount Everest.

The rotation of 2003 YT1 has been observed. It completes a rotation on its axis every 2.34 hours.

Close Approaches

2003 YT1's orbit is 0.00 AU from Earth's orbit at its closest point. This means that its orbit is relatively close to Earth's orbit.

2003 YT1 has 18 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Nov. 3, 2023 8,879,937 23.251
Nov. 5, 2030 22,202,533 22.541
April 23, 2059 24,085,489 22.388
April 26, 2066 10,094,373 23.050
April 29, 2073 1,694,922 23.826
Oct. 28, 2078 19,665,397 25.446
May 4, 2080 25,263,301 25.956
Nov. 2, 2085 5,998,956 23.462
April 25, 2107 21,034,108 22.509
May 1, 2114 4,778,722 24.060
Oct. 31, 2119 11,859,087 24.676
Nov. 6, 2126 18,279,831 22.701
April 23, 2141 27,535,484 22.270
April 30, 2148 2,005,184 23.848
Nov. 1, 2153 7,743,678 24.242
May 1, 2175 2,443,015 23.887
Nov. 2, 2180 4,681,119 23.766
April 27, 2195 12,890,565 22.890

Images and Observations

2003 YT1's orbit is determined by observations dating back to Nov. 19, 1982. It was last officially observed on April 1, 2023. The IAU Minor Planet Center records 1,277 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 2003 YT1:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.11 AU
  • Eccentricity: 0.2919
  • Inclination: 44.06°
  • Longitude of Ascending Node: 38.32°
  • Argument of Periapsis: 91.04°
  • Mean Anomaly: 257.89°

Physical Characteristics

  • Diameter: 1.71700 km
  • Magnitude: 16.33
  • Albedo: 0.198

Derived Characteristics

  • Orbit Period: 427 days (1.17 years)
  • Avg. Orbit Speed: 28.28 km/s
  • Aphelion Distance: 1.43 AU
  • Perihelion Distance: 0.79 AU
  • Rotation Period: 2.34 hours

Map Comparison

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Orbit Simulation

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Sky Map

The position of 164121 (2003 YT1) 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 2003 YT1 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.