129322 (2005 TN45)

Mid-sized Mars-crossing Asteroid

Space Reference » Mars-crossing Asteroids » 129322 (2005 TN45)

Key Facts

Overview

129322 (2005 TN45) is a mid-sized asteroid with an orbit that crosses the orbit of Mars. NASA JPL has not classified 2005 TN45 as potentially hazardous because its orbit does not bring it close to Earth.

2005 TN45 orbits the sun every 1,260 days (3.45 years), coming as close as 1.66 AU and reaching as far as 2.91 AU from the sun. 2005 TN45 is about 2.6 kilometers in diameter, making it larger than 99% of asteroids, comparable in size to Mount Everest.

No Close Approaches

2005 TN45's orbit is 0.69 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

2005 TN45's orbit is determined by observations dating back to Sept. 24, 1960. It was last officially observed on Dec. 20, 2022. The IAU Minor Planet Center records 646 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 2005 TN45:

References

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Orbital Elements

  • Epoch: 2460200.5 JD
  • Semi-major axis: 2.283 AU
  • Eccentricity: 0.2734
  • Inclination: 11.37°
  • Longitude of Ascending Node: 17.16°
  • Argument of Periapsis: 268.98°
  • Mean Anomaly: 137.87°

Physical Characteristics

  • Diameter: 2.56100 km
  • Magnitude: 16.55
  • Albedo: 0.046

Derived Characteristics

  • Orbit Period: 1,260 days (3.45 years)
  • Avg. Orbit Speed: 19.71 km/s
  • Aphelion Distance: 2.91 AU
  • Perihelion Distance: 1.66 AU

Map Comparison

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Orbit Simulation

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Sky Map

The position of 129322 (2005 TN45) 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 2005 TN45 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.