Westfall

Key Facts

• Categorized as a Main-belt Asteroid
• Comparable in size to the island of Manhattan (3.65 km diameter)
• Not a Near Earth Object
• Not a Potentially Hazardous Object
• See orbit simulation

Overview

Westfall is a mid-sized asteroid orbiting between Mars and Jupiter in the main portion of the asteroid belt. NASA JPL has not classified Westfall as potentially hazardous because its orbit does not bring it close to Earth.

Westfall orbits the sun every 1,560 days (4.27 years), coming as close as 2.52 AU and reaching as far as 2.76 AU from the sun. Westfall is about 3.6 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the island of Manhattan.

No Close Approaches

Westfall's orbit is 1.50 AU from Earth's orbit at its closest point. This means that there is an extremely wide berth between this asteroid and Earth at all times.

Orbital simulations conducted by NASA JPL's CNEOS do not show any close approaches to Earth.

Images and Observations

Westfall's orbit is determined by observations dating back to Oct. 10, 1993. It was last officially observed on June 28, 2023. The IAU Minor Planet Center records 1,371 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 Westfall:

• 15 Eunomia (A851 OA)
• 23 Thalia (A852 XA)
• 37 Fides (A855 TB)

References

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

Orbit Simulation

Sky Map

The position of Westfall 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 Westfall 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.