Mongmanwai

Key Facts

• Categorized as a Main-belt Asteroid
• Comparable in size to the San Francisco Bay (7.97 km diameter)
• Not a Near Earth Object
• Not a Potentially Hazardous Object
• See orbit simulation

Overview

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

Mongmanwai orbits the sun every 1,490 days (4.08 years), coming as close as 2.06 AU and reaching as far as 3.04 AU from the sun. Mongmanwai is about 8.0 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to the San Francisco Bay.

The rotation of Mongmanwai has been observed. It completes a rotation on its axis every 4.18 hours.

Mongmanwai's spectral type None (Tholen) / S (SMASSII) indicates that it is likely to contain and .

No Close Approaches

Mongmanwai's orbit is 1.08 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

Mongmanwai's orbit is determined by observations dating back to March 21, 1950. It was last officially observed on May 15, 2023. The IAU Minor Planet Center records 3,957 observations used to determine its orbit.

Scientists have been able to determine this object's shape:

View asteroid Mongmanwai in 3D.

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 Mongmanwai:

• 29 Amphitrite (A854 EB)
• 89 Julia (A866 PA)
• 170 Maria (A877 AA)

References

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

Orbit Simulation

Sky Map

The position of Mongmanwai 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.