Masaakikoyama

Key Facts

• Categorized as a Amor-class Asteroid
• Comparable in size to Mount Everest
• Will pass within 28,906,109 km of Earth in 2099
• Classified as a Near Earth Asteroid (NEA)
• Not a Potentially Hazardous Object
• See orbit simulation

Overview

Masaakikoyama is a mid-sized asteroid whose orbit approaches the orbit of Earth but does not cross it. NASA JPL has classified Masaakikoyama 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.

Masaakikoyama orbits the sun every 1,180 days (3.23 years), coming as close as 1.17 AU and reaching as far as 3.20 AU from the sun. Based on its brightness and the way it reflects light, Masaakikoyama is probably between 1.308 to 2.924 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to Mount Everest.

The rotation of Masaakikoyama has been observed. It completes a rotation on its axis every 58.00 hours.

Close Approaches

Masaakikoyama's orbit is 0.19 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.

Masaakikoyama has 2 close approaches predicted in the coming decades:

Images and Observations

Masaakikoyama's orbit is determined by observations dating back to June 24, 1979. It was last officially observed on Dec. 26, 2022. The IAU Minor Planet Center records 2,016 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 Masaakikoyama:

• 254 Augusta (A886 FA)
• 270 Anahita (A887 TA)
• 281 Lucretia (A888 UC)

References

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

Orbit Simulation

Sky Map

The position of Masaakikoyama 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 Masaakikoyama 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.