Key Facts

Overview

529938 (2010 TM182) is a large asteroid whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 2010 TM182 as potentially hazardous because its orbit does not bring it close to Earth.

2010 TM182 orbits the sun every 90,300 days (247.23 years), coming as close as 32.90 AU and reaching as far as 45.90 AU from the sun. Based on its brightness and the way it reflects light, 2010 TM182 is probably between 105.817 to 236.614 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the U.S. state of Connecticut.

No Close Approaches

2010 TM182's orbit is 31.90 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

2010 TM182's orbit is determined by observations dating back to Oct. 14, 2001. It was last officially observed on Sept. 26, 2020. The IAU Minor Planet Center records 167 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 2010 TM182:

References

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Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 39.4 AU
  • Eccentricity: 0.1649
  • Inclination: 5.62°
  • Longitude of Ascending Node: 44.82°
  • Argument of Periapsis: 30.29°
  • Mean Anomaly: 337.08°

Physical Characteristics

  • Diameter: ~136.609 km
  • Magnitude: 7.0

Derived Characteristics

  • Orbit Period: 90,300 days (247.23 years)
  • Avg. Orbit Speed: 4.75 km/s
  • Aphelion Distance: 45.90 AU
  • Perihelion Distance: 32.90 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 529938 (2010 TM182) 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.