Key Facts

  • Categorized as a Aten-class Asteroid
  • Comparable in size to the U.S. Capitol building
  • Will pass within 19,388,651 km of Earth in 2033
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

163023 (2001 XU1) is a very small asteroid whose orbit could bring it in close proximity to Earth. NASA JPL has classified 2001 XU1 as a "Near Earth Asteroid" due to its orbit's proximity to Earth, but it is not considered potentially hazardous because computer simulations have not indicated any imminent likelihood of future collision.

2001 XU1 orbits the sun every 260 days (0.71 years), coming as close as 0.36 AU and reaching as far as 1.23 AU from the sun. Based on its brightness and the way it reflects light, 2001 XU1 is probably between 0.367 to 0.820 kilometers in diameter, making it larger than 90% of asteroids but tiny compared to large asteroids, very roughly comparable in size to the U.S. Capitol building.

Close Approaches

2001 XU1's orbit is 0.06 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.

2001 XU1 has 20 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Nov. 28, 2033 19,388,651 22.251
Nov. 27, 2038 9,928,563 20.113
Nov. 27, 2043 10,126,885 18.439
Nov. 28, 2048 18,561,426 17.165
Dec. 1, 2053 27,922,119 16.412
Nov. 30, 2075 27,908,285 24.004
Nov. 28, 2080 16,222,419 21.603
Nov. 27, 2085 8,503,203 19.597
Nov. 27, 2090 12,114,795 18.037
Nov. 29, 2095 21,150,981 16.920
Dec. 1, 2122 24,860,351 23.416
Nov. 29, 2127 13,621,422 21.081
Nov. 28, 2132 8,110,736 19.190
Nov. 29, 2137 14,044,840 17.712
Dec. 1, 2142 23,455,366 16.704
Nov. 30, 2169 21,681,927 22.781
Nov. 29, 2174 11,155,914 20.564
Nov. 29, 2179 8,674,189 18.785
Nov. 29, 2184 16,385,388 17.411
Dec. 2, 2189 25,999,513 16.524

Images and Observations

2001 XU1's orbit is determined by observations dating back to Nov. 23, 2001. It was last officially observed on Jan. 21, 2019. The IAU Minor Planet Center records 324 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 2001 XU1:

References

Search

   or view a random object

Orbital Elements

  • Epoch: 2459396.5 JD
  • Semi-major axis: 0.7973 AU
  • Eccentricity: 0.5464
  • Inclination: 27.15°
  • Longitude of Ascending Node: 69.7°
  • Argument of Periapsis: 208.53°
  • Mean Anomaly: 289.11°

Physical Characteristics

  • Diameter: ~0.474 km
  • Magnitude: 19.3

Derived Characteristics

  • Orbit Period: 260 days (0.71 years)
  • Avg. Orbit Speed: 33.36 km/s
  • Aphelion Distance: 1.23 AU
  • Perihelion Distance: 0.36 AU

Map Comparison

Click to load map

Orbit Simulation

Sky Map

The position of 163023 (2001 XU1) 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 2001 XU1 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.