Key Facts

Overview

471165 (2010 HE79) is a dwarf planet whose orbit extends beyond the orbit of Neptune. NASA JPL has not classified 2010 HE79 as potentially hazardous because its orbit does not bring it close to Earth.

2010 HE79 orbits the sun every 89,500 days (245.04 years), coming as close as 32.15 AU and reaching as far as 46.17 AU from the sun. Based on its brightness and the way it reflects light, 2010 HE79 is probably between 253.837 to 567.597 kilometers in diameter, making it one of the largest objects, very roughly comparable in size to Iceland.

The rotation of 2010 HE79 has been observed. It completes a rotation on its axis every 19.49 hours.

No Close Approaches

2010 HE79's orbit is 31.20 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 HE79's orbit is determined by observations dating back to May 24, 1992. It was last officially observed on July 12, 2020. The IAU Minor Planet Center records 360 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 HE79:

References

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Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 39.16 AU
  • Eccentricity: 0.179
  • Inclination: 15.69°
  • Longitude of Ascending Node: 238.69°
  • Argument of Periapsis: 283.88°
  • Mean Anomaly: 65.76°

Physical Characteristics

  • Diameter: ~327.702 km
  • Magnitude: 5.1

Derived Characteristics

  • Orbit Period: 89,500 days (245.04 years)
  • Avg. Orbit Speed: 4.76 km/s
  • Aphelion Distance: 46.17 AU
  • Perihelion Distance: 32.15 AU
  • Rotation Period: 19.49 hours

Map Comparison

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Orbit Simulation

Sky Map

The position of 471165 (2010 HE79) 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.