444193 (2005 SE71)

Very small Apollo-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Apollo-class Asteroids » 444193 (2005 SE71)

Key Facts

  • Categorized as a Apollo-class Asteroid
  • Comparable in size to the U.S. Capitol building (0.44 km diameter)
  • Will pass within 28,427,612 km of Earth in 2027
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

444193 (2005 SE71) is a very small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 2005 SE71 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2005 SE71 orbits the sun every 404 days (1.11 years), coming as close as 0.86 AU and reaching as far as 1.28 AU from the sun. 2005 SE71 is about 0.4 kilometers in diameter, making it larger than 90% of asteroids but tiny compared to large asteroids, comparable in size to the U.S. Capitol building.

The rotation of 2005 SE71 has been observed. It completes a rotation on its axis every 66.80 hours.

Close Approaches

2005 SE71'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.

2005 SE71 has 22 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Nov. 8, 2027 28,427,612 12.981
Oct. 28, 2037 13,385,949 15.211
April 28, 2039 18,689,692 15.095
April 26, 2049 26,385,954 12.494
Oct. 31, 2058 3,310,184 14.265
April 29, 2060 25,582,349 15.983
Oct. 25, 2079 27,301,774 16.820
April 26, 2081 8,371,761 13.644
Nov. 4, 2090 8,790,432 13.438
April 27, 2102 17,180,601 12.739
Nov. 2, 2111 4,103,233 14.329
April 30, 2113 23,811,058 15.770
Nov. 8, 2122 22,960,684 12.991
April 27, 2134 17,699,705 12.722
Oct. 29, 2143 17,675,696 15.667
April 28, 2145 12,110,391 14.348
Nov. 5, 2154 8,952,413 13.431
April 28, 2166 25,180,901 12.531
Oct. 28, 2175 20,565,114 15.985
April 28, 2177 10,826,326 14.174
Nov. 6, 2186 13,426,353 13.227
April 27, 2198 17,089,043 12.743

Images and Observations

2005 SE71's orbit is determined by observations dating back to Sept. 30, 2005. It was last officially observed on June 22, 2020. The IAU Minor Planet Center records 485 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 2005 SE71:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.069 AU
  • Eccentricity: 0.1943
  • Inclination: 24.83°
  • Longitude of Ascending Node: 39.1°
  • Argument of Periapsis: 78.3°
  • Mean Anomaly: 26.28°

Physical Characteristics

  • Diameter: 0.43700 km
  • Magnitude: 18.19
  • Albedo: 0.503

Derived Characteristics

  • Orbit Period: 404 days (1.11 years)
  • Avg. Orbit Speed: 28.79 km/s
  • Aphelion Distance: 1.28 AU
  • Perihelion Distance: 0.86 AU
  • Rotation Period: 66.80 hours

Map Comparison

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Orbit Simulation

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Sky Map

The position of 444193 (2005 SE71) 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 2005 SE71 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.