348400 (2005 JF21)

Mid-sized Amor-class Asteroid

Near-Earth Potentially Hazardous
Space Reference » Amor-class Asteroids » 348400 (2005 JF21)

Key Facts

  • Categorized as a Amor-class Asteroid
  • Comparable in size to the U.S. Pentagon
  • Will pass within 8,436,966 km of Earth in 2088
  • Classified as a Near Earth Asteroid (NEA)
  • Classified as a Potentially Hazardous Asteroid (PHA)
  • See orbit simulation

Overview

348400 (2005 JF21) is a mid-sized asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified 2005 JF21 as a "Potentially Hazardous Asteroid" due to its predicted close pass(es) with Earth.

2005 JF21 orbits the sun every 1,210 days (3.31 years), coming as close as 1.03 AU and reaching as far as 3.42 AU from the sun. Based on its brightness and the way it reflects light, 2005 JF21 is probably between 0.901 to 2.014 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. Pentagon.

The rotation of 2005 JF21 has been observed. It completes a rotation on its axis every 2.41 hours.

Close Approaches

2005 JF21's orbit is 0.05 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.

2005 JF21 has 4 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Aug. 16, 2088 8,436,966 9.106
July 23, 2098 27,149,364 13.691
Sept. 2, 2171 16,078,573 8.839
Aug. 5, 2181 10,319,700 10.650

Images and Observations

2005 JF21's orbit is determined by observations dating back to Nov. 19, 2002. It was last officially observed on Jan. 12, 2023. The IAU Minor Planet Center records 1,234 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 JF21:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.225 AU
  • Eccentricity: 0.5355
  • Inclination: 10.85°
  • Longitude of Ascending Node: 132.2°
  • Argument of Periapsis: 206.14°
  • Mean Anomaly: 151.5°

Physical Characteristics

  • Diameter: ~1.163 km
  • Magnitude: 17.35

Derived Characteristics

  • Orbit Period: 1,210 days (3.31 years)
  • Avg. Orbit Speed: 20.00 km/s
  • Aphelion Distance: 3.42 AU
  • Perihelion Distance: 1.03 AU
  • Rotation Period: 2.41 hours

Map Comparison

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Orbit Simulation

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Sky Map

The position of 348400 (2005 JF21) 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 2005 JF21 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.