Trajanus

Key Facts

• Categorized as a Mars-crossing Asteroid
• Comparable in size to the island of Manhattan
• Not a Near Earth Object
• Not a Potentially Hazardous Object
• See orbit simulation

Overview

Trajanus is a mid-sized asteroid with an orbit that crosses the orbit of Mars. NASA JPL has not classified Trajanus as potentially hazardous because its orbit does not bring it close to Earth.

Trajanus orbits the sun every 1,190 days (3.26 years), coming as close as 1.66 AU and reaching as far as 2.73 AU from the sun. Based on its brightness and the way it reflects light, Trajanus is probably between 2.732 to 6.110 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the island of Manhattan.

The rotation of Trajanus has been observed. It completes a rotation on its axis every 6.11 hours.

No Close Approaches

Trajanus's orbit is 0.65 AU from Earth's orbit at its closest point. This means that there is a very 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

Trajanus's orbit is determined by observations dating back to Sept. 24, 1960. It was last officially observed on March 18, 2023. The IAU Minor Planet Center records 2,666 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 Trajanus:

• 8 Flora (A847 UA)
• 43 Ariadne (A857 GA)
• 228 Agathe (A882 QA)

References

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

Orbit Simulation

Sky Map

The position of Trajanus 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 Trajanus 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.