400320 (2007 TG357)

Key Facts

• Categorized as a Outer Main-belt Asteroid
• Comparable in size to Mount Everest
• Not a Near Earth Object
• Not a Potentially Hazardous Object
• See orbit simulation

Overview

400320 (2007 TG357) 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 2007 TG357 as potentially hazardous because its orbit does not bring it close to Earth.

2007 TG357 orbits the sun every 2,950 days (8.08 years), coming as close as 3.10 AU and reaching as far as 4.96 AU from the sun. Based on its brightness and the way it reflects light, 2007 TG357 is probably between 1.998 to 4.467 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to Mount Everest.

No Close Approaches

2007 TG357's orbit is 2.10 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

2007 TG357's orbit is determined by observations dating back to Oct. 30, 1999. It was last officially observed on Sept. 29, 2022. The IAU Minor Planet Center records 225 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 2007 TG357:

• 3655 Eupraksia (1978 SA3)
• 40238 (1998 VR13)
• 60318 (1999 XB235)

References

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

Orbit Simulation

Sky Map

The position of 400320 (2007 TG357) 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 2007 TG357 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.