11054 (1991 FA)

Mid-sized Amor-class Asteroid

Near-Earth
Space Reference » Amor-class Asteroids » 11054 (1991 FA)

Key Facts

  • Categorized as a Amor-class Asteroid
  • Comparable in size to the U.S. Pentagon
  • Will pass within 20,007,859 km of Earth in 2040
  • Classified as a Near Earth Asteroid (NEA)
  • Not a Potentially Hazardous Object
  • See orbit simulation

Overview

11054 (1991 FA) is a mid-sized asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified 1991 FA 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.

1991 FA orbits the sun every 1,020 days (2.79 years), coming as close as 1.09 AU and reaching as far as 2.86 AU from the sun. Based on its brightness and the way it reflects light, 1991 FA is probably between 1.020 to 2.281 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. Pentagon.

The rotation of 1991 FA has been observed. It completes a rotation on its axis every 2.57 hours.

Close Approaches

1991 FA's orbit is 0.12 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.

1991 FA has 4 close approaches predicted in the coming decades:

Date Distance from Earth (km) Velocity (km/s)
Dec. 6, 2040 20,007,859 4.406
Dec. 8, 2079 19,877,452 4.406
Dec. 15, 2118 25,445,797 5.812
Nov. 28, 2171 23,002,090 5.111

Images and Observations

1991 FA's orbit is determined by observations dating back to Nov. 28, 1937. It was last officially observed on July 22, 2023. The IAU Minor Planet Center records 1,331 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 1991 FA:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 1.979 AU
  • Eccentricity: 0.4467
  • Inclination: 3.08°
  • Longitude of Ascending Node: 339.06°
  • Argument of Periapsis: 92.34°
  • Mean Anomaly: 292.45°

Physical Characteristics

  • Diameter: ~1.317 km
  • Magnitude: 17.08

Derived Characteristics

  • Orbit Period: 1,020 days (2.79 years)
  • Avg. Orbit Speed: 21.11 km/s
  • Aphelion Distance: 2.86 AU
  • Perihelion Distance: 1.09 AU
  • Rotation Period: 2.57 hours

Map Comparison

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Orbit Simulation

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Sky Map

The position of 11054 (1991 FA) 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 1991 FA 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.