129002 (2004 TR256)

Key Facts

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

Overview

129002 (2004 TR256) is a mid-sized asteroid that orbits between Mars and Jupiter in the outer reaches of the main asteroid belt. NASA JPL has not classified 2004 TR256 as potentially hazardous because its orbit does not bring it close to Earth.

2004 TR256 orbits the sun every 2,910 days (7.97 years), coming as close as 3.11 AU and reaching as far as 4.87 AU from the sun. Based on its brightness and the way it reflects light, 2004 TR256 is probably between 2.783 to 6.224 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the island of Manhattan.

No Close Approaches

2004 TR256's orbit is 2.14 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

2004 TR256's orbit is determined by observations dating back to Oct. 6, 1996. It was last officially observed on May 11, 2023. The IAU Minor Planet Center records 475 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 2004 TR256:

• 190 Ismene (A878 SA)
• 958 Asplinda (A921 SD)
• 1180 Rita (1931 GE)

References

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

Orbit Simulation

Sky Map

The position of 129002 (2004 TR256) 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 2004 TR256 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.