Key Facts

Overview

2015 RD277 is a large asteroid with an orbit between Jupiter and Neptune. NASA JPL has not classified 2015 RD277 as potentially hazardous because its orbit does not bring it close to Earth.

2015 RD277 orbits the sun every 48,600 days (133.06 years), coming as close as 18.47 AU and reaching as far as 33.63 AU from the sun. Based on its brightness and the way it reflects light, 2015 RD277 is probably between 18.389 to 41.119 kilometers in diameter, making it larger than 99% of asteroids, very roughly comparable in size to the city of Indianapolis.

No Close Approaches

2015 RD277's orbit is 17.50 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

2015 RD277's orbit is determined by observations dating back to July 19, 2015. It was last officially observed on Nov. 22, 2017. The IAU Minor Planet Center records 33 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 2015 RD277:

References

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Orbital Elements

  • Epoch: 2459000.5 JD
  • Semi-major axis: 26.05 AU
  • Eccentricity: 0.2908
  • Inclination: 18.83°
  • Longitude of Ascending Node: 5.6°
  • Argument of Periapsis: 354.05°
  • Mean Anomaly: 16.31°

Physical Characteristics

  • Diameter: ~23.740 km
  • Magnitude: 10.8

Derived Characteristics

  • Orbit Period: 48,600 days (133.06 years)
  • Avg. Orbit Speed: 5.83 km/s
  • Aphelion Distance: 33.63 AU
  • Perihelion Distance: 18.47 AU

Map Comparison

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Orbit Simulation

Sky Map

The position of 2015 RD277 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.