137158 (1999 FB)

Key Facts

• Categorized as a Apollo-class Asteroid
• Comparable in size to the Golden Gate Bridge
• Will pass within 29,698,954 km of Earth in 2081
• Classified as a Near Earth Asteroid (NEA)
• Not a Potentially Hazardous Object
• See orbit simulation

Overview

137158 (1999 FB) is a small asteroid whose orbit crosses the orbit of Earth. NASA JPL has classified 1999 FB 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.

1999 FB orbits the sun every 468 days (1.28 years), coming as close as 0.46 AU and reaching as far as 1.90 AU from the sun. Based on its brightness and the way it reflects light, 1999 FB is probably between 0.693 to 1.549 kilometers in diameter, making it larger than ~97% of asteroids but small compared to large asteroids, very roughly comparable in size to the Golden Gate Bridge.

The rotation of 1999 FB has been observed. It completes a rotation on its axis every 6.07 hours.

1999 FB's spectral type None (Tholen) / Q (SMASSII) indicates that it is likely to contain .

Close Approaches

1999 FB's orbit is 0.20 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.

1999 FB has 2 close approaches predicted in the coming decades:

Images and Observations

1999 FB's orbit is determined by observations dating back to May 24, 1998. It was last officially observed on May 25, 2022. The IAU Minor Planet Center records 556 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 1999 FB:

• 12711 Tukmit (1991 BB)
• 17511 (1992 QN)
• 88254 (2001 FM129)

References

• JPL Small Body Database
• Mission Design
• Sky Finder Chart

Orbit Simulation

Sky Map

The position of 137158 (1999 FB) 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 1999 FB 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.